Not sure if this is an option for Intel users, but AMD users should check if their memory runs ganged or unganged.
This should be unganged for multi-threaded programs, just like RO:HOS.
Programs that actually use multiple cores benefit from this mode.
Don't ask me to explain this. I got it from the forums at Overclock.net and every motherboard has a different BIOS setup. I know the BIOS on my PC, not yours.
http://www.overclock.net/amd-memory/324052-ganged-vs-unganged-mode.html
Anyway, I changed this to ganged just to test it and I lose 10fps (from 30-35 fps) in Barracks
I have a Phenom I, X3 8750 BE @2,8GHz (back to 2.4GHz = -5fps)
4 GB PC 6400 (800MHz) (Unganged mode)
ATI HD4890 1GB (256bit)
VIA HD onboard sound
Quality settings on medium
All bottom options off (going to try with bloom this evening)
had 40-50 fps on Appartments
30-40 fps on Fallen Fighters
didn't play Gumrak
30-35 on Barracks (dips to about 15-20 when arty is partying...)
Not played on the other 2 maps enough to have a decent reading.
I tried a lot of tweaking...