BTW, if you're using a Nvidia GPU I'd recommend upping the shader cache size from default (I believe it's 4GB IIRC) to 10 or so
It's already debunkt, people posting all sorts of placebo solutions but they won't fix anything.
There are multiple reasons why the game stutters, one of them is the shader cache but the majority of the time it's the "invisible loading" lines which is the worst offender in my playthrough. Either you endure it or try some mods out (or Steam deck where Valve apparently was able to improve some issues).
The worst technical issues I've noticed so far:
Invisible lines in the world which when you go over causes huge stutters and fps drops (easily repeatable and mindblowing that this to this day was never properly addressed, the first patch after launch made it a bit better).
DX12 shader caching stutter and fps drops
Some effects just kill the fps for no reason (e. g. whenever the big plant spores; later in the game when a walking mausoleum was shooting magic caused massive fps drops and it holded that for a while until the attack was finished).
Generally whenever a lot of effects accour the game tends to cripple, I've monitored my pc and the gpu usage can drop down to half, it's just broken).
Some shadows are very broken (I think mostly/only in the snowy region and people say this came with the newest patch).
Many (boss) cutscenes heavily freeze for a second too long whenever the camera transitions to a different angle. It ruins the flow of the cutscene.
Some graphic settings are resetting every time you restart the game (e. g. Anti aliasing and I think depth of field).
Unnessary huge input buffering.
All these issues are both extremely obvious, easy to reproduce (QA easily must've caught that months before launch) and are ignored by From and Bamco which just pathetic and the more time passes the more arrogant they seem ignoring these problems.
These don't go away just because people praise how good the game is despite the massive technicalities faults. We suffer through it.