Hey Bill. Same issue here. I am running a 3080TI with a 58003ds AMD Processor and 32 GB of Ram. I get the same 8 fps suddenly and if i managed to get the plane out of the KLAX area my fps goes back up to maybe 20-28 frames per second and increases as i get further away from Klax, I have the same issue that if i look back to the terminal in the southwest it will suddently crawl to 9fps. I have sent some emails to inibuilds and the link to this forum. It is totally the CPU that takes the hit when i analyze in the developers FPS tools. Something is amiss to cause the sudden 8FPS. That part doesn't make sense.