Yeah; I tested it out with just CBA and ALiVE on air assault. Sure enough, laggy as hell but only when moving. I could fly the helicopter just fine, but when hitting shift (for acceleration, or altitude gain or whatnot) it started to lag.

I isolated it down to CBA and/or ALiVE by testing to play with only them activated on air assault. Laggy as hell.
I used other mods when I tried to run A3M PMC Simulator, but as said, I tested with only CBA and ALiVE.
When I ran a game without mods, no problems.

I don't know what more specifics I could help you guys out with... There is probably not anything with my hardware, but I don't really know.
My system specifics are;
i5-2500K running at 3.7GHz
8gb RAM
GTX 770

It worked! A new profile was all I needed. Crazy. I think I tried everything else before including overclocking. Thank you!

Nope, not the same one. Byt I'll Gry that for sure! How do I do that; just delete the old one? I'm currently doping a clean install with all saves, profiles, mods etc ereased. I hope it will fix it.

Another wicked thing is that I can pilot a chopper, no problem. I can fly around normally, shoot, turn - smooth sailing, but when I increase throttle, then the framerate drops.

Hi! Sorry for the late answer.
The problem persists when testing out Operation Landlord aswell as Air Assault.

I have around 60-80 FPS while standing still, but drops to 6-8 while moving. Riding a moving vehicle doesn't make the framerate drop. It's all very strange. Any ideas?

Hi! I have this issue, I think it has to do with the ALiVE mod. I am trying to run A3M PMC game on a dedicated server, but when I am joining with my client on another computer, my FPS i just fine while standing still, but at once I start to move, I drop to something like 8 FPS. Does anyone have an idea what may have caused this?

Playing SP w/o mods does not render any problems.
Please help!