Is there anything to do to mitigate them?..

I play it on win10 and have the same problem. games like risen or the witcher work great. but in Gothic 3 over 150 fps and then for 2 seconds the fps drops to 10 fps. does anyone have a solution? Thanks

Do you play around in ge3.INI to increase the distant view. Right?

I have change the distant view, details... to low and high. But same problem frames drops. other games run fine.

One of the problems with G3 engine is that it doesnt preload level data properly so the stuttering you are getting is because its pausing to load new data. This is made worse by the fact that the game data is heavily compressed which make makes it glitch when it needs to burn CPU decompressing the data.

This is semi-fixable by uncompressing the main images an meshes files manually. To do that you need to use modding tools to extract the pak/m0 etc files to a temp dir then rebuild them with no compression.

https://forum.worldofplayers.de/forum/threads/237474-Gothic-3-Tool-Sammlung

I used G3Pak and G3PakDir to unpack then rebuild the 4 biggest files (dont bother doing the speech file, its not compressed).
There is also the "Clean Up" tool which is supposed to do it for you, I tried this before I did it manually but it didnt work for me bu then I have a fully modded up install. Doing it manually with the Pak tools is actually pretty straight forward anyway.

I was finally able to play Gothic 3 with almost no stutter. I installed it on a solid state drive.

And does it work or does it still stutter at times?