Hi I'm hoping someone can help me

I've just installed CS777 1.4 for P3D v2.2 and the performance seems really low. I seem to get no more than 15-17fps.

Turning other display options like msaa etc seems to have no real effect. I've tried changing cpu affinity in task manager, which has resulted in the 15-17fps - before it was more like 12fps.

I have all the latest software drivers etc afaik

AMD 8320 8 core OC'd @ 4200
GTX770 2gb
16GB RAM
Win 7

Does this sound right?  :-[