So I set up a HyperV VM for sharing my machine with my fiance for gaming and work.
I also partitioned my GPU so heavier games run on it as well.
The GPU is recognized and judging by performance in all games except that one, the partitioning works.
Now this single game is Euro Truck Simulator 2. Even on lowest graphics it feels laggy although showing between 55 and 60 fps, while for reference, SnowRunner works on full graphics with absolute smooth video.
VM has allocated 8 cores, 12 GB of fixed RAM and has 300 GB of space on a Samsung Evo 870 with 2TB
I was recommended this forum by the r/techsupport discord, if any more info is needed, let me know