Constant stuttering and freezing since the update. I have a very powerful machine that handled the game with ease before this latest update. Game constantly freezes for a second when enemies get near.
This is a shader caching issue that can occur after some updates. Depending on the update, it might wipe your shader cache so it has to be rebuilt as you play, unfortunately. The first time the GPU has to render a specific texture there is a micro-stutter as it fetches it. Once you have seen all the textures, you are fully cached and good to go.
For me, I ran around the hub a bunch first, and the stutters stopped about 5 min into the first map.