Blur Busters Forums

mackrozhkoff wrote: ↑

12 Mar 2026, 19:24

G-SYNC Pulsar Monitor Firmware Update


https://www.nvidia.com/en-us/geforce/pr ... rs/update/

sooooo this doesn't bring the new 48hz minimum pulsar rate? I'm also curious how the new 60hz fixed strobe mode will be compared to just running 240hz ULMB on a 60/30 fps game

Just updated my monitor! these are the full patchnotes when you go to update

- Monitor now takes full range of frame rates (1-360 FPS) as input in G-SYNC/Pulsar mode.
- Eliminated sharp double image for <90 FPS.
- FPS indicator now works correct below 90 FPS.
- Reduced time spent with Pulsar disabled when game frame rate is irregular.
- Faster sharpness recovery on game FPS changes.
- Added 60 FPS ULMB mode with adjustable duty cycle.
- Added 120 FPS Pulsar mode.


Adjustable pulse width in locked 60hz mode IS REALLY CLEAR but there is a very noticeable flicker. It is for sure above a 4x motion boost! I can easily see the 0.7ms line on the MPRT mode with 2880px/sec. I can just barely make out the gap in the 0.5ms line at 3840px/sec but its too fast for me to really catch with my eyes for sure. I can't really believe im saying this but it kinda looks clearer than my crt with the lack of phosphor trails. You guys really need to try this out right now Im seriously impressed and so happy.

Still need to test how much VRR pulsar has improved and also need to double check if they fixed the monitor's detection on Linux. You could "trick the monitor" it and it would work but some things like low fps vrr would cause issues.

WOW! that update made pulsar significantly more reliable! I don't even have to set async or front edge cap for it to work, everything looks more consistently clear! O_O this is absolutely amazing! and they added pulse width to ULMB 2 mode (gsync disabled) and a 60 hz mode, man it feels like christmas, I hope they add pulsar down to 60 hz in a later update (when they add 48 hz mode) so we can play 60 fps locked games without touching anything but I'm happy if it just stays like this imo.

Interesting thing is that the non vrr mode at higher refresh rates still lets you choose an adjustable pulse. I thought it was only for 60hz by how the patchnotes were worded. Ulmb mode at 120 or higher is definitely not as crazy of a jump in clarity as the 60hz mode but it does let you squeeze some more motion clarity and a slightly cleaner strobe (at least to my eye) at the cost of giving up vrr. Probably not worth it in most scenarios though.

edgintheledge wrote: ↑

12 Mar 2026, 20:05

mackrozhkoff wrote: ↑

12 Mar 2026, 19:24

G-SYNC Pulsar Monitor Firmware Update

OMG ive been checking in on this thread like everyday waiting for the firmware patch im going to check it out rn

OMG I don’t want to goto work!

Whoever checks this out please post on how well it works whilst I’ll be spamming F5 on thread at work.

Added 60 FPS ULMB mode with adjustable duty cycle

Long shot but does this work through HDMI for consoles?

brownvim wrote: ↑

13 Mar 2026, 01:54

OMG I don’t want to goto work!

Whoever checks this out please post on how well it works whilst I’ll be spamming F5 on thread at work.

Hahaha, same here!

I am wondering what the changelog bullet point "Reduced time spent with Pulsar disabled when game frame rate is irregular." means.

What is an irregular framerate? Too low? I dont think so, then they would have phrased it differently. Is that something regarding the 1% lows?
Cant wait to test it. Maybe it now works fine with Nv Reflex enabled, no more external framecap tools necessary etc. Hopefully one step closer to "it just works..."

edgintheledge wrote: ↑

12 Mar 2026, 21:38

Adjustable pulse width in locked 60hz mode IS REALLY CLEAR but there is a very noticeable flicker. It is for sure above a 4x motion boost! I can easily see the 0.7ms line on the MPRT mode with 2880px/sec. I can just barely make out the gap in the 0.5ms line at 3840px/sec but its too fast for me to really catch with my eyes for sure. I can't really believe im saying this but it kinda looks clearer than my crt with the lack of phosphor trails. You guys really need to try this out right now Im seriously impressed and so happy.

Interesting thing is that the non vrr mode at higher refresh rates still lets you choose an adjustable pulse. I thought it was only for 60hz by how the patchnotes were worded. Ulmb mode at 120 or higher is definitely not as crazy of a jump in clarity as the 60hz mode but it does let you squeeze some more motion clarity and a slightly cleaner strobe (at least to my eye) at the cost of giving up vrr. Probably not worth it in most scenarios though.

This is amazing! Thanks for confirming.

edgintheledge wrote: ↑

12 Mar 2026, 20:54

I can easily see the 0.7ms line on the MPRT mode with 2880px/sec.

Let's assume for a second that:
60 Hz (16,667 ms) is able to achieve ~0,7 ms MPRT (2880 px/s pixel speed UFO)
This would imply a 4,19991600167997 % pulse width.
This would also imply a brightness of 42 cd/m² (if 1000 cd/m² voltage boosting) or 83cd/m² (if 2000 cd/m² voltage boosting, which I've only seen the XL2566K do thus far)
The former is borderline unusable...
Can you tell us how 'adjustable' it is? How many total steps? In what increments? Could you measure the brightness targets for each using this method

It's a shame that the display is still HDMI 2.0 (locking it out of console use and forcing DSC upon the user in the QHD@360Hz setting), but this is a major improvement!
AMD GPUs are likely still not supported when using ULMB2 or Pulsar, though a confirmation is necessary to give a definitive conclusion.
I do have concerns of the >120Hz claim... I really hope they've allowed it to hit <10% duty cycle with ease.

I wonder whether one could create custom refresh rate targets (e.g.: 72Hz, 96Hz) and use ULMB2 with adjustable PW for them?...

mawi wrote: ↑

13 Mar 2026, 03:23

brownvim wrote: ↑

13 Mar 2026, 01:54

OMG I don’t want to goto work!

Whoever checks this out please post on how well it works whilst I’ll be spamming F5 on thread at work.

Hahaha, same here!

I am wondering what the changelog bullet point "Reduced time spent with Pulsar disabled when game frame rate is irregular." means.

What is an irregular framerate? Too low? I dont think so, then they would have phrased it differently. Is that something regarding the 1% lows?
Cant wait to test it. Maybe it now works fine with Nv Reflex enabled, no more external framecap tools necessary etc. Hopefully one step closer to "it just works..."

That's pulsar compensation pulse, So normally when your FPS isn't perfectly stable (say bouncing between 90 - 120) pulsar would stop making things clear in exchange for preventing flicker by using the compensation pulse more. With this update, they reduced how often that happens with small swings in fps so you don't have to get super perfect fps in order to get the clarity effect, all while still not causing huge visible flicker during said swings! When pulsar first came out, the "clarity" would only be visible in certain games where you could get perfect frame times or very lightweight titles but after this update I don't even need riva fps cap helping to keep things steady, it just works!

brownvim wrote: ↑

13 Mar 2026, 02:14

Added 60 FPS ULMB mode with adjustable duty cycle

Long shot but does this work through HDMI for consoles?

Yes it does! Switch 2 looks fantastic with 60fps games. You just need an hdmi audio extractor or compatible dac.