Tried a few things that seem to have fixed some stuff and I think I have found the main issue.
- Removed Gigabyte Aorus Engine and replaced it with MSI after burner (reduced stuttering / crashes and slugginess in Windows)
- Deleted DX shader cache (removed stuttering)
- Disabled 2/3 displays (fixed flickering, because 2 are 60hz and 1 is 120hz)
- Manually set pagefile (increase from 4GB to 8GB, improved starting times)
Although it runs more stable, the framerate wouldn't budge much, so I ran some tests
- Kamino 32 vs 32 = 40 fps
- Kamino 5v5 = 140 fps
- Kamino 20 vs 20 = 60 fps
my friends, we have a CPU bottleneck.
Seems like the good 'ol 4790k is in need of replacement.