Thanks for response. I use DX-12(beta)/TAA anti-alias but tried DX-11 and got same results – CTD. I normally use windowed mode but tried full screen with same results. Tried all anti-alias settings in both DX-11/DX-12 – same CTD. MSFS2020 graphic settings are pretty much default, based on graphic card specs and anti-alias selection.
Of specific note: on DX-11, all anti-alias settings, I was able to get as far as “select Fly screen.” Once selected, sim immediately CTD. Again, it only happens with iniBuild KSAT airport when Afterburner is launched. If no afterburner, no problem with your KSAT.
I've had no problems in sim whatsoever with Afterburner launched, where scenery has much higher graphic demands than the iniBuilds KSAT (eg, KLAX, EGLL, EDDL, NYC, etc).
FYI: I use two different monitors: Samsung 34” (3440 x 1440/75hz – DP1.4 input) and a 55” Samsung TV (3840 x 2160/60hz – HDMI2.1 input). Thanks again!!!