I experience the same. I tried tweaking alot of the ini for any setting that refers to graphics or cache and it seemed to work - some. I also use Process Lasso to force the exe to run at Highest Priority and that also seemed to help - some. But i do get frame stuttering when loading a new area - especially city/villages with buildings. I have the game installed a very fast high end SSD so I dont know. I am just thinking its the game engine at this point.

i'm running a new AMD Ryzen CPU that is just an amazing monster CPU that destroys anything i throw at it so its definitely not my system.

win10
AMD Ryzen 7 3700X
32gb RAM
500gb Samsung SSD
AMD Vega 56