FS Live Traffic is great, but now Tower and Approach ATC need help!!!!

Ok, it looks like eliminating GA AI traffic in the traffic settings allows me to run at 100% at KOAK. I still have 737s coming in without any seperation(1-2nm apart)on occasion, but its not nearly as bad. I still have the problem with slow landing roll/taxi speeds, but with only jets Im less likly to have an AI aircraft that requires a long taxi/landing roll to exit the active runway.Oddly, it seems KLAX is able to function much more efficently, but thats the benefit of having multiple runways and simultaneous parallel approaches...like KAOK should have with the north fields to get smaller jets and GA traffic in.