20FPS to 5 FPS with limited numbers of AI and the default Cessna? It can make the sim unflyable. That was with a single airline installed and about ten aircraft on the ramp, which was actually
fewer than the default FSX AI put there (about 15).
It's not about numbers of aircraft, it's about how well your rig handles what you give it and some handle it better than others.
That wasn't my rig, by the way. I was asked for a recommendation to solve it by PM and my immediate suggestion was to try PAI, in case it was a scheduling or specific model problem, but that was the same. He switched to MyTrafficX in the limited DX10 mode which only uses FSX native traffic and I haven't heard from him since so assume he is now happy!
Personally, I saw a moderate slow down - about 2 or 3fps with similar amounts of traffic on my pre-upgrade setup, but now run no add-on AI at all other than that which I have programmed myself, so it's all a moot point for me.
I have no problem recommending WoAI to anyone, but if you have problems, it's nice to know there are alternatives too!
