Yep, same exact issue here. Looks like we're waiting for another patch.

Hmm I cleared DirectX shader cache once and it did the trick

Same problem here. Even with today's patch and verifying the install.
[Edit] Cleared DX caches and alas, didn't work.

I use mod that remove shader compilation, it doesn't affect the game whatsoever, so I have no idea why the F it is still being done since the first game SoC, it doesn't improve anything.

Mod that I use is "STALKER2Tweak (Ultrawide fixes and more)" from Nexus mods, but you can search within Nexus Mods "compiling" keyword and you will find two more modes at least that remove shader compilation garbage.

I've been running my mod since early patches and I have no issues besides the average crashes by broken game.

Hi
I had that problem too.
Sometimes clearing the DirextX cache helped and sometimes not.
But what I have noticed that in the start of compilation just kill the game from the process and lounch it again, the game will show you error last time compiling the shaders and this time it will not do it before the start of the game but during the game - for me it was not a problem, I didn't had a any stuttering or nothing and the game was running like never before.
Some people says that turning your power saving in windows helps, it didn't helped me. But some claims it works too.