I'm experiencing mouse input lag with any settings, only additional heavier settings like high msaa or ambient occlusion seem to add more input lag on top of already existing input lag.
So far I've set mouse smoothing to 0 in cfg, disabled Game Bar/Mode/Captures, fullscreen optimization, HPET, Windows Defender, set priority to High on Dayz_64.exe, tried different mouse DPI/sensitivity and different polling rates - 1000Hz, 500Hz, 125Hz, adjusted time resolution to 1/0.5, played locally without internet, plugged PSU and monitor cables into different wall sockets, removed ASUS Armoury Crate, Razer Cortex, Razer Synapse 3, antivirus programs.
MCLK, UCLK, FCLK are all of 1:1:1 ratio.
XMP enabled.
My PC specs are:
Keyboard - HyperX Alloy Origins Core
Mouse - Razer Naga X
Monitor - LG UltraGear 27GP850-b (165Hz)
Motherboard - ROG STRIX B550-F GAMING WIFI II
CPU - Ryzen 5 5600
GPU - RTX 4070
RAM - G.Skill Trident Z 2x16 DDR4 3600Mhz CL18
PSU - Cooler Master V750
I seriously doubt the problem is on my end as I've tried Rust, Mafia 2 DE, CS2 and I don't have any input lag there whereas DayZ feels sluggish even at 160+ FPS.