Thrundar: Thrawns Revenge Sort of works. I can get halfway through Galactic conquest (91 planets) on my GOG version, then the game crashes, freezes, locks up. Also other bugs such as wrong star fighters, and amounts of fighters. Lots of stuttering in galaxy view mode as well, galaxy game speed slowed down and it still stutters.
Thrawns Revenge looks nice, just not very playable for me.
Just wrote GOG support as well to get a confirmation as to whether GOG's DRM version of FOC is the latest version.
(1.01.58910)
It also depends on your computer.
As the mod blows up the maps quite a bit, it uses more CPU as well as GPU power. So if you don´t mind me asking, what have you got ;) ?
For me on W8.1, I5-4690 and a 280X no problem....