Slow Framerates

When flying in VR with the HP Reverb G2 I have lower frame rates in the Cleveland, Ohio area but not in other cities. I’m not sure why. I’ve deleted all extra scenery down to the basic and I still have FPS slow down. Has anyone else had this and does anyone have a suggestion? I had used the Bing Scenery enhancer, but deleted it. I’ve cleaned my cache, uninstall extra scenery, But in local airports near Cleveland I get the ground changing color as I fly over it, so something still has to be going on. I’m affraid that my only solution is to re-install MSFS, but I am hesitating to do that for obvious reasons.