When there is about 80- 100 destra crusaders on screen, framerate drops suddenly.

Perhaps some options to disable the reflections or something, when I have them off-screen and see them fire, all the projectiles dont slow the framerate, but the very highly perhaps high poly + reflective chrome-like surface is killing performance.

At least on my gtx1080.

All their projectiles firing, doesnt do anything, them being on screen turns to like 5 frames per second from otherwise non-stuttering. 

Some units are more performance eaters than others. Projectiles the same.

Most TEC units seem rather perf.-efficient, I mainly played as TEC so I didnt notice AI doesnt mass those ships and I usually did not zoom in enough I guess utilizing that shader in the beta would remove the reflections, so perhaps thats worth trying as well. I think at least the reflections are biggest performance eaters. Maybe too much detail per ship too, I dont know ofc.