MysticKite and all - yes, PMDG was not allowed access to the SU11 code prior to public beta testing, and SU11 causes many issues in 737 family, so they are saying not to install it if you want to fly in MSFS. Not beta testing SU11. Did roll back to 517.48 driver and will see what is going on. I will also do some diagnostics/fixes on system to make sure nothing is showing up if possible. Did have issues with DX12 as scenery just got jagged at locations. Went back to DX11 and now things work good again. The problem did start after 522.25 driver installed so we will see. Laptop is almost 3 YO now, so something could be going on.