"Do I need to flash a new UEFI image on the motherboard, to enable ReBAR on the GPU ? Yes, this is how it works for Turing GPUs (GTX 1600 / RTX 2000)."

Sounds scary. Like there is a good chance to brick the motherboard permanently. I think i'm going to skip this for my ye olde pc with crappy GTX 1660 Ti card. Can't afford a new system.