Thanks guys!
I spent 3 hours flying high density areas last night - NY, L.A., and with sliders between high and ultra, the sim was solid. I didn't stutter once and everything was loading smoothly.
I think it might be something totally simple, I'll keep poking around. Landing on the beach near los Angeles, I noticed all the buildings were deformed, like they had been bombed. lol I have screen caps but haven't been able to upload one. As soon as I can, I will.
Focusing on the positive - I have hundreds of real world hours in some of these planes and I can say the Cessna 152 flies amazingly well. Very accurate in most ways. To be able to hand fly a default simulator a/c often letting go of the yoke and having it stay stable, is an amazing thing.
I don't understand people who have given up on this already. It's a great product albeit still buggy. Just my opinion.
More to come.
Delta