I've got Dying Light 2 installed via Steam. I've verified files, re-downloaded, upgraded and downgraded video card drivers (NVidia GTX 1660Ti). I've tried disabling the Steam overlay, I've tried "/nolightfx", and I've checked that video.scr is specifying DX11.
Custom PC
Supermicro X8DT3 motherboard
Dual Intel Xeon X5687 (4 core 3.6GHz with hyperthreading)
96GB Registered ECC RAM
NVidia GeForce GTX 1660Ti; Geforce Game Ready Driver version 536.98
The only real weird thing I have going on is the age of the motherboard and CPUs, but they give me no problems in anything else.