The game was running perfectly fine before the patch, now it's stuttering in a lot of places to the point where it becomes unplayable.
I'm playing on PC via Steam with an RTX 4090, AMD Ryzen 9 7950X3D, 32GB RAM.
I'm not the only one with this issue:
https://www.reddit.com/r/avowed/comments/1m1sdv0/avowed_stutters_after_15_patch/
https://www.reddit.com/r/avowed/comments/1m17so9/stutter_after_update_15/
I tried cleaning the shader cache, to no avail.
NVIDIA drivers are up-to-date.