PSA for AMD users - the new drivers released in the past day or two (Adrenalin 23.8.2) have fixed this error when running in DX11 for me. This has dramatically improved my experience - when running in Vulcan, my 7900 XTX got absolutely terrible performance in dialogues (constant, unending stuttering) all throughout Act 2. But I couldn't run in DX 11 - the performance was great when it ran, but it would crash the game. The new AMD drivers have fixed that - no more crashing. Now that I'm able to play the game in DX 11, no more annoying stuttering in dialogues!