Nvidia reflex increases latency in OW2 or what am I looking at?

[svagen]

After testing different nvidia reflex settings in ow2 with PresentMon I assume that enabling nvidia reflex (on/on+boost) or ow2 reduce buffering setting increases latency.

My setup:
gtx 1080ti
i7 8700k
16gb 3200Mhz
240hz monitor

ingame settings:
fullscreen, all low, 70% render scale, 239 fps cap

no gsync no vsync, nvcp 3d set for performance

PresentMon results:

Hardware: Legacy Flip

Nvidia reflex on+boost:
MsRenderPresentLatency = 0.032
MsUntilDisplayed = 0.82

Nvidia reflex on:
MsRenderPresentLatency = 0.023
MsUntilDisplayed = 0.83

Reduce buffering on(reflex off):
MsRenderPresentLatency = 0.016
MsUntilDisplayed = 0.72

Nvidia reflex off | reduce buffering off:
MsRenderPresentLatency = 0.018
MsUntilDisplayed = 0.45


I did the same test in valorant and got opposite results:

settings all low, 239 fps cap

Hardware: Legacy Flip

Nvidia reflex on+boost:
MsRenderPresentLatency = 0.012
MsUntilDisplayed = 0.23

Nvidia reflex off:
MsRenderPresentLatency = 0.012
MsUntilDisplayed = 0.45

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Do I understand correctly that if I want the least latency(on my system) in ow2 I should set reflex and reduce buffering off?

[kyube]

Do I understand correctly that if I want the least latency(on my system) in ow2 I should set reflex and reduce buffering off?

It depends on your HW's capabilities.
Let's dissect each:

Here's some RB disabled vs enabled data, provided by @Calypto


As for Reflex, it depends whether you are experiencing a GPU-limitation (can be spotted by evaluating GPUTime or GPUBusy metrics in PreesntMon)
I'm not sure if the 1080Ti is limited at 240FPS cap in OW2, especially at lower render scale.