Blur Busters Forums

Got this monitor to substitute XL2540 (240HZ).
I play cs go competetively only.
I limited the FPS with XL2540 to 237 with CHILL + Freesync and could maintain these FPS always (260-600fps...)
The consistent aiming felt great.

Now with the acer:
Currently I use:
Ingame fps limiter: fps_max 388 + Freesync + Anti-Lag
fps are 260-600.., most of the time about 350-400.
Without Freesync it doesnt feel smooth for me.

My problems:
1. I simply can not get the same clear vision. In CS I used high color vibrance/saturation, I just feel like the acer is not bright enough compared to the Benq, even with adjustments in amd settings.
I think it the Acer should be a big improvement here.
2. I notice I often can not hit easy shots even if I am on the enemy and aiming away from enemy again. This is really strange.
This means at the moment I am performing noticeably better with the XL2540.

Questions:
How to use freesync on the acer?
1.390HZ and FPSmax 388 and some fluctuation of fps
or
2.FPS that can be held most of the time. ex: fps_max 300 with 390HZ
or
3. Also lower the HZ to ex. 300HZ and use fpx_max 298

Can CHILL be somehow used with a bigger limit than 300 maybe the ingame limiter is just trash.

Thanks

@paddyhhh
Have you enabled option "Picture/Max Brigthness/ON" ?

My config is 390Hz, Freesync, Radeon Antilag, 384 ingame cap. I hate CHILL.

I dont understand your problem missing shots, for me in fast moves ( flicks ) all are more focused.

Hi,

why can this display strobe at 360/390Hz while the other 360Hz/G-Sync displays are limited to 240Hz strobing? 2nd gen of 360hz ips panels? And why can't g-sync and ulmb be combined?

paddyhhh wrote: ↑

26 Jul 2021, 11:01

Limiting fps with RTSS, NVCP MF, Radeon Chill will increase input lag by around 40% or higher. If u use in-game limiter there is no need for second one. Mentioned third party limiters are good for microstutter sensitive cases like backlight strobing where those extremely flat frame times are desirable.

There is also no need to use AMD Anti-Lag or NV Low Latency if your gpu is not constantly utilized at 99%. Otherwise such features can increase latency.


For adaptive sync fps cap I have a rule Hz-2%. Some fluctuation is fine. Always use max Hz for adaptive sync.

If you don't care about adaptive sync, disable it and get max fps (but avoid constant 99% gpu usage) for narrowing latency further.

> How to use freesync on the acer?
Turn it OFF. Not only at Acer monitors.

@Discorz
I found ( feel ) good results with Anti Lag in 90-100% GPU load ( MSI Afterburner ), better ( probably,cant measure ) closer to 99%. But I can measure it, Battlenonsense should have enabled Antilag at 92%-95% GPU load XD ( https://www.youtube.com/watch?v=7CKnJ5ujL_Q, 11:00 ).

Today I received the monitor.
One problem: I can not choose higher than 300hz. Even when I turn on OC in OSD.
When I hard force 360+hz with cru, screen goes black. Anyone else experienced this?

CJRS wrote: ↑

30 Jul 2021, 10:26

Today I received the monitor.
One problem: I can not choose higher than 300hz. Even when I turn on OC in menu.
When I hard force 360+hz with cru, screen goes black. Anyone else experienced this?

Unfortunately sounds like it's headed for a return/RMA

CJRS wrote: ↑

30 Jul 2021, 10:26

Today I received the monitor.
One problem: I can not choose higher than 300hz. Even when I turn on OC in menu.
When I hard force 360+hz with cru, screen goes black. Anyone else experienced this?

Dont force frequency with CRU. Enable OC "System/Overclock/On". To erase everything you've done, in CRU "reset all" and then "restart" PC. Thats all.

Discorz wrote: ↑

28 Jul 2021, 02:13

paddyhhh wrote: ↑

26 Jul 2021, 11:01

Limiting fps with RTSS, NVCP MF, Radeon Chill will increase input lag by around 40% or higher. If u use in-game limiter there is no need for second one. Mentioned third party limiters are good for microstutter sensitive cases like backlight strobing where those extremely flat frame times are desirable.

There is also no need to use AMD Anti-Lag or NV Low Latency if your gpu is not constantly utilized at 99%. Otherwise such features can increase latency.


For adaptive sync fps cap I have a rule Hz-2%. Some fluctuation is fine. Always use max Hz for adaptive sync.

If you don't care about adaptive sync, disable it and get max fps (but avoid constant 99% gpu usage) for narrowing latency further.

The term "Lag-free" is wrong.

Remember, total lag for a single frame is CPU time + wait in the queue + own GPU time.

If the CPU pushes frames faster than GPU can process, it will be queued.

When 100% utilization: The GPU is consistently not handling the frames submited by CPU and then queueing it up to the queue limit when it request CPU to stop sending more frames.

When utilization is very high (90~100%): The GPU **ON AVERAGE** can process more frames than the CPU is submitting but statistically a good portion of the frames will have higher GPU time than frame submit time. So you have a very high GPU time and some intermittent frames being queued.

When utilization is low (30%<): The chance of some random frames being queued exists but it is small. But even in this scenario and without any queue you have the formula CPU time + GPU time for each frame, so if you lower the GPU time you will have latency reduction.

Each frame stays in the queue for a while, and that time is independent for each frame. The higher the GPU load, statistically, the higher the number of frames with longer time in the queue and higher GPU time for each frame. You can even plot this curve with Nvidia FrameView (it's a column called Queue Depth).

This is pretty similar with frametimes and FPS, where the average is okay, but it can fluctuate all over the place.

Even in CSGO with 3080 and very-low GPU usage in higher resolutions, you can see a totally different graph by moving from 640x480 and 1080p. And also, even in 640x480 you can see some frames with queue depth bigger than 1. So there is a huge difference moving from 90% GPU utilization to 10%.

The lower the GPU usage, the better.

TIP: Even if your GPU is low (ex: 50%), double-check if your GPU is not downclocking to save power. If so, try to fix the clock so you can reduce it even further.