I was facing this issue even on 535.98 using the nvidia-dkms package while using 6.1.46-1-lts kernel on arch linux. But that changed when I switched to nvidia-lts package instead. Now I almost get no flickers. Very rarely I see like a few flickers on the top portion of my screen, still running my monitor at 2560x1440 @ 144Hz refresh rate.
It’d be great if someone else can confirm if this is a one-off or a reproducible observation. Thanks.