In patch 6, the prologue + Underdark causes lots of frame drops (and weird rotation sensitivity changes when frames drop below a certain threshold, at least on Vulkan), most other places seem fine. During these drops, I can see my GPU utilization dropping from 99/100% to lower numbers, so it seems like a bottleneck somewhere outside GPU processing maybe? DX11 runs faster, as it always has, but I have a weird problem with corrupted Withers' face, which does not happen on Vulkan. Vega 64 / 5950x / 1440p + Ultra (no FSR).