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CS2: FPS drop when enabling NVIDIA Reflex on a 360Hz G-SYNC OLED

Posted: 07 Oct 2026, 13:24
by Bucking
Hey everyone,

I’m trying to understand an issue I’m having with NVIDIA Reflex in CS2.

My setup:

* RTX 3080 Ti
* Ryzen 9 5900X
* Dell AW2725DF 360Hz OLED
* G-SYNC enabled
* V-SYNC enabled in the NVIDIA Control Panel
* CS2 running at 360Hz

With NVIDIA Reflex disabled, my FPS is basically locked at 360 FPS, as expected with my G-SYNC + V-SYNC setup.

However, as soon as I enable **NVIDIA Reflex**, my FPS drops significantly to around 280–300 FPS. This seems very strange to me and not intendend. If I remember correctly FPS should get locked to 324 or 328 with Reflex enabled?

Is this normal behavior for Reflex in CS2? Does Reflex actually reduce the achievable FPS this much, or could this be related to how CS2/NVIDIA reports FPS when Reflex is enabled?

Would you recommend:

* G-SYNC ON + V-SYNC ON + Reflex ON
* or disabling Reflex in this situation?

My main goal is the lowest possible input latency while still using G-SYNC properly at 360Hz.

Thanks!

Re: CS2: FPS drop when enabling NVIDIA Reflex on a 360Hz G-SYNC OLED

Posted: 07 Oct 2026, 16:22
by cuaderno
Does this happen if you drastically lower your graphic settings?

Re: CS2: FPS drop when enabling NVIDIA Reflex on a 360Hz G-SYNC OLED

Posted: 07 Oct 2026, 22:44
by Bucking
Settings are basically on very low.

Also if enable V sync in game instead of control panel it seems like neither the 360hz FPS cap nor any reflex cap works.
FPS stays unlocked

Re: CS2: FPS drop when enabling NVIDIA Reflex on a 360Hz G-SYNC OLED

Posted: 08 Oct 2026, 03:59
by cuaderno
Bucking wrote: ↑
Yesterday, 22:44
Settings are basically on very low.

Also if enable V sync in game instead of control panel it seems like neither the 360hz FPS cap nor any reflex cap works.
FPS stays unlocked
Reflex will dynamically reduce your fps to prevent high GPU load. To make sure that if this is what is happening try enabling steam telemetry (or another method you prefer to show GPU load% on an overlay) and notice the GPU load% values when reflex is disabled compared to enabled.

If you are at close to 100% GPU load with reflex disabled, then enabling reflex will reduce your fps and reduce GPU load. This is working as intended and the best way to reduce input lag. If you don't want your fps reduced so much by reflex, you need to lower your resolution.

To the second point, whatever vsync setting is on NVCP will override the in-game setting, So if you set vsync on NVCP to disabled, enabling it in game does nothing.

Re: CS2: FPS drop when enabling NVIDIA Reflex on a 360Hz G-SYNC OLED

Posted: 08 Oct 2026, 12:52
by Bucking
GPU is under 50% even with reflex disabled.
With it enabled it's around 40% to 44% so basically the same.

But it seems to work better with vsync ingame instead of nvcp