Blur Busters Strobe Utility Download & HOWTO for ViewSonic XG2431 240Hz 23.8″ IPS Monitor

ViewSonic XG2431 Finally Shipping Today with Blur Busters Approved 2.0

ViewSonic just announced (2021-07-27) that XG2431 is now shipping, and Blur Busters announced (2021-04-09) the XG2431 Blur Busters Approved 2.0 status on Blur Busters founder Mark Rejhon’s birthday.

As of today, the monitor is now shipping at ViewSonic USA. If you are in Europe, send them a Sales Inquiry. Delays were due to industry-wide chip & panel shortages. But no longer; the first Blur Busters fan has already received their unit!

Included Blur Busters Approved 2.0 Features

The XG2431 PureXP motion blur reduction mode has been enhanced by Blur Busters:

  • Reduced strobe crosstalk for motion clarity closer to CRT motion clarity;
  • Easy High Quality Pre-Tuned Strobe (60, 100, 120, 144, 240 Hz) via monitor menu!
  • Retro Friendly Strobe (60 Hz) for consoles, TV, and emulators! (MAME, RetroArch, YouTube, TV, etc)
  • Strobe any Hz in 0.001Hz increments. No preset refresh rate limitation!
  • Strobe any video or television source, not just GPUs!
  • Optional Strobe Utility support (see below);
  • Optional Large Vertical Total support (via Custom Resolution Utility) for strobe crosstalk reductions;
  • Optional Quick Frame Transport support (via Custom Resolution Utility) for low lag strobing.
Swipe Left
Display Model Size Resolution Refresh
Rate
VRR
Tech
Motion Blur
Tech
ViewSonic
XG2431
24″
IPS
1920×1080
99% sRGB
240Hz
1ms IPS
G-SYNC 
& FreeSync
Yes
PureXP+

Optional ViewSonic Strobe Utility Download for Advanced Users

Just like colorimeters are optional for advanced color tuning, Strobe Utility is optional for strobe tuning. Blur Busters philosophy is all advanced users should have access to strobe tuning.

What is Strobe Utility Useful For?

For most users, easy pre-tuned strobe modes are already pre-installed on the XG2431 and does not require Strobe Utility. However, Strobe Utility can help the following:

  • System tray control & built-in TestUFO Motion Test
    Enable & adjust PureXP quickly via system tray Icon & see results in built-in TestUFO test.
  • Reduce strobe crosstalk for specific areas of screen
    Adjust the location of strobe crosstalk to make it less visible in your real-world games
  • Access to 0.1ms MPRT
    Some Strobe Utility settings and refresh rates achieve MPRT as low as 0.1ms
  • Additional levels of motion clarity & strobe brightness settings
    Access to 40 different levels of tradeoffs between extra brightness versus extra motion clarity
  • Temperature compensation & panel variance compensation
    Reduce strobe crosstalk in cold rooms, hot rooms & compensate for factory variances. Real world rooms are not same temperature as laboratories! LCD GtG is slower in cold rooms. We let you adjust.
  • Better than factory tuning & Large Vertical Totals
    Just like colorimeters lets advanced color calibrators achieve better than factory tuning, experienced users can also use Strobe Utility to achieve strobe quality better than factory tuning.

Installing and Using ViewSonic Strobe Utility

  1. Download and install ViewSonic Strobe Utility: ViewSonicStrobeUtilitySetup-v213.msi
  2. Launch ViewSonic Strobe Utility
  3. Access PureXP settings via System Tray
  4. Instantly Launch Built-In Offline TestUFO Motion Test
    Click the UFO icon to launch the TestUFO Crosstalk Test, a swarm of UFOs that is useful for checking strobe quality (strobe crosstalk double images). TestUFO intentionally exaggerates strobe crosstalk to make it easier to adjust; crosstalk will be less visible in real-world software than TestUFO.
  5. Adjust Multiple XG2431 Monitors
    Click the Monitor selector to choose a different XG431 monitor to adjust.
  6. For optional advanced Custom strobe tuning, see next section below:

Advanced DIY Strobe Tuning via Custom PureXP

  1. Warm up XG2431 at least 30-60 minutes for best strobe quality
    This is a best-practices for people doing advanced color tuning via colorimeter too. The same warm-up advice is also true for advanced strobe tuning via Strobe Utility.
    – Cold LCDs behave slower & worse strobe crosstalk with extra ghosting.
    – Hot LCDs can show coronas (inverse ghosting) that didn’t exist at lab temperature.
  2. Change PureXP to “Custom”
    Once you do this, adjust in sequence: (A) Pulse Width; then (B) Overdrive Gain; then (C) Pulse Phase
  3. Adjust Strobe Pulse Width to a brightness versus clarity preference

    – Bigger pulse width is brighter, but UFOs will be less clear at high speeds.
    – Smaller pulse width is dimmer, but UFOs will be clearer at high speeds.
    – Adjust to personal preference, subsequent settings depend on finalizing this.
  4. Adjust Overdrive Gain until crosstalk is minimized as much as possible

    Below is an animated simulation of real-time crosstalk behavior while you adjust “Overdrive Gain”

  5. Adjust Strobe Phase until clearest strobe area is where you prefer it (usually screen center)

    Below is animated simulation of real-time crosstalk behavior while you adjust “Strobe Pulse Phase”:
  6. For optional fine-tuning adjustments (minor corrections), repeat steps 3,4,5 again in sequence.
    The second pass is much easier! And you should do this again after one week. It can take time for LCDs to stabilize after factory. This is also the common industry-wide recommendation for color professionals too (Colorimeter), not just for strobe professionals (Strobe Utility).
  7. Now you’ve created your Custom PureXP mode!
    This mode is only valid for the specific resolution, refresh rate (and other CRU settings) that you custom-tuned. Remember to repeat steps 3,4,5 in ViewSonic Strobe Utility for any new custom mode (e.g. Custom Resolution Utility) that you want better strobe performance than out-of-the-box PureXP settings.

Note: Your ViewSonic XG2431 will memorize these settings every time you select “Custom” for PureXP. You can switch away from PureXP “Custom” if you wish to to use a pre-tuned PureXP setting, and then switch back to “Custom” when you need this custom strobe tuning.

Higher refresh rates require stronger Overdrive Gain than lower refresh rates. You need to repeat these steps for a different refresh rate. Higher refresh rates will require a stronger Overdrive Gain, than lower refresh rate

IMPORTANT: 60 Hz PureXP will have extreme flicker at Windows Desktop; discontinue use or increase refresh rate if it bothers you. 60 Hz single-strobe is recommended ONLY for retro content such as 60fps games and video (e.g. sports TV, GoPro videos, YouTube, Sonic Hedgehog, platformers & other fast-motion 60fps)

Optional Advanced Tips for Strobe Connoisseurs & Strobe Professionals

  • Tip #1 For Better CRT Motion Clarity:
    Give your brand new monitor a break-in period, and always warm-up every power-on.

    it is best to power your monitor for a few days (or weeks) to break-in your monitor when first receiving the monitor. Subsequently, make sure to warm-up for at least half an hour after every subsequent power-on because a cold panel in a cold room will also have slower LCD GtG with more strobe crosstalk. LCD GtG pixel response takes time to stabilize (e.g. temperatures during shipping, temperature in cold rooms, pressure spots during shipping, liquid redistribution inside LCD glass sandwich, etc.)
    Expected Improvement: Between 5% and 25%
  • Tip #2 For Better CRT Motion Clarity:
    Use framerates matching Hz with any strobed display
    If your game cannot run frame rates matching 240 Hz, you may get more double images, try a lower refresh rate for better CRT motion clarity. The refresh rate headroom technique improves strobe quality on nearly all strobed panels, not just the XG2431. This gives more time for LCD GtG pixel response to complete between refresh cycles, and also allows your GPU frame rates to match Hz. This combination dramatically improves strobe quality. Unlike other monitors that limits your strobed refresh rate, PureXP is 100% unlocked and uncapped to let users choose crosstalk-vs-Hz tradeoff!
    Expected Improvement: Major Improvement
  • Tip #3 For Better CRT Motion Clarity:
    Use large vertical totals (Quick Frame Transport – QFT) with large Hz headroom below max Hz.
    Reduced latency strobing with reduced crosstalk can be achieved via Large Vertical Totals using a Custom Resolution Utility. Both NVIDIA Control Panel or ToastyX CRU lets you do this. Discussion on creating Large Vertical Totals can be discussed via the Blur Busters Forums. The more refresh rate headroom below max Hz, the progressively less strobe crosstalk you will get after re-tuning with Strobe Utility. QFT modes will always require the “Custom” PureXP setting for best quality. Strobe crosstalk is able to completely perfectly disappear below approximately 100Hz-120Hz or less. A popular compromise sweet spot is 75Hz-100Hz for CRT enthusiasts, to avoid 60Hz flicker or 240Hz crosstalk.
    Expected Improvement: Major Improvement For Top/Bottom Edges
  • Combining All The Above Tips Are Is Possible
    Lower refresh rates (60Hz-144Hz) are able to go nearly perfectly zero strobe crosstalk for screen centre, when all these tweaks are simultaneously combined. Even top and bottom edges can also go perfect zero crosstalk too, if refresh rate headroom is sufficiently big enough to hide LCD GtG pixel response in strobe BFI dark periods between refresh cycles (60Hz-100Hz).
    Expec ted Improvement: Maximum Possible Improvement

Optional: What Are Large Vertical Totals? Quick Frame Transport? (QFT)

Custom Large Vertical Totals (large blanking intervals) allows the refresh cycle to be transmitted faster to the display over your DisplayPort or HDMI cable (e.g. 120Hz refresh cycle in 1/240sec) and refreshed faster to the panel (120Hz refresh cycle in 1/240sec). See Instructions for creating Quick Frame Transport modes.

This allows the XG2431 to strobe the refresh cycle sooner, resulting in lower display latency, with less strobe crosstalk! As a bonus, large vertical totals is also known as Quick Frame Transport (QFT), a mode advertised by HDMI Forum, but also works on DisplayPort too. (Note: QFT only helps PureXP or certain VSYNC modes)

An example Large Vertical Total mode is these ToastyX CRU settings, which can reduce strobe lag by 25% to 50% for the 120Hz refresh rate, and also is useful for RTSS Scanline Sync, an advanced frame rate capping utility made available by Guru3D working with Blur Busters.

120 Hz refresh rate with Quick Frame Transport

Once you create your custom mode, reboot your computer (or run ToastyX restart64.exe to reboot your GPU without needing to reboot Windows). Test your custom mode. Verify your new Vertical Total shows up in Strobe Utility too. If it works, repeat the DIY strobe tuning steps above to get your reduced strobe crosstalk & low lag.

WARNING: Custom Resolution Utility tweaking can cause your monitor to go OUT OF RANGE. Please do not do advanced steps (e.g. Custom Resolution via NVIDIA Control Panel or ToastyX) without knowing what you are doing. Make sure you know how to use such utilities before following such steps. Make sure you have a 2nd monitor, so you can more easily undo OUT-OF-RANGE modes. Another trick is to switch inputs on the ViewSonic (use HDMI instead of DisplayPort, or DisplayPort instead of HDMI) to get a picture back to allow you to undo your tweak. The popular utility, ToastyX CRU, includes reset-all.exe which you can run to undo all mis-tweaking. Safe Tweaking!

Perfect Zero Crosstalk Can Occur With Custom 100Hz QFT Modes And Lower

ViewSonic Strobe Utility improvements are much more effective with lower refresh rates combined with QFT.  At refresh rates of approximately 100-120 and lower, with maximized QFT, the ViewSonic XG2431 is capable of perfect zero crosstalk after re-tuning the low-Hz mode with all above instructions. The more refresh rate headroom below max Hz, the more effective good strobe tuning can become.

Refresh rate headroom massively reduces strobe crosstalk. 120Hz strobing is much better quality on as 240Hz panel than a 144Hz panel. Many people have already also purchased the 240 Hz ViewSonic XG2431 even for low-Hz usage, because of how it can become CRT motion clarity at lower refresh rates.

With proper experienced Strobe Utility tuning, concurrently with QFT, concurrently with lower Hz, it is now possible to get perfect zero double image ghost effects. This is capable of achieving perfect zero crosstalk and perfect zero LCD motion blur much like high end VR LCDs (like an Oculus Quest 2 or Valve Index), during framerate=Hz motion content.

Quality-Priority Strobing versus ESports Latency-Priority Strobing

  • For easy low-lag strobing, simply use 240Hz and enable PureXP. The monitor is already optimized for low-latency 240Hz PureXP for esports and competitive gaming! Strobe Utility is completely optional.
  • For best quality-priority strobing, use all techniques above (break-in + warm-up + low Hz + QFT + Strobe Utility retuning). Strobe Utility re-tuning is mandatory to zero-out crosstalk for QFT modes, for getting closer to CRT motion quality.
  • Compromise easy 120 Hz setting: A common between latency-vs-quality extremes is 120Hz PureXP, especially when used with games that cannot reach 240fps. You simply switch to 120Hz (instructions) and simply enable PureXP via monitor menu. You can also optionally use a 120fps or 240fps frame rate cap to eliminate stutter. This allows games to look TestUFO-smooth.
  • Compromise low-lag 120 Hz QFT setting: If you want lower 120Hz latency and less strobe crosstalk, create a 120Hz QFT Custom Resolution with the numbers published in this screenshot. Once you do this, it is mandatory to load Strobe Utility to re-tune the QFT mode. Strobe Utility re-tuning is mandatory for all custom QFT mode. 120Hz QFT will have a few milliseconds lower display lag than factory stock 120Hz.

Easy Strobing Is Already Preinstalled on XG2431

Remember, advanced tweaks are optional, and so is Strobe Utility. The great optional utility is not mandatory for XG2431 use. The Utility’s main purpose is to adjust the “PureXP Custom” motion blur reduction setting.

It is worth noting that XG2431 has the most flexible easy factory preprogrammed strobe modes available on any 240Hz IPS panel on the market, even if you never download Strobe Utility!

Swipe Left
Display Model Size Resolution Refresh
Rate
VRR
Tech
Motion Blur
Tech
ViewSonic
XG2431
24″
IPS
1920×1080
99% sRGB
240Hz
1ms IPS
G-SYNC 
& FreeSync
Yes
PureXP+