I flew most of the day with various aircraft, from Botswana to Victoria Falls, Miami to the Everglades, Edmonton to Calgary, Arkansas to Tennessee, and maybe other places I forgot. I am still scratching my head. I have had flights that were beautiful for hours, then all of a sudden the glitches start. A reboot is the only way to clear them up for a bit. I was trying to see if flying outside of an Orbx "Region" would make a difference. I had fewer, or no glitches in non-Orbx areas (FTXG hybrid mode), like Miami and Arkansas, and Botswana. Edmonton was terrible, trying to fly to Calgary. I don't believe it is an Orbx issue though. Maybe the Orbx scenery is just busier, more complex. Changing mesh resolution seems to have some effect on the glitches severity.
I re-activated the UIAutomationcore.dll file, as it wasn't the cure. I unistalled that KB###### update, but that didn't fix it either. Correction, I THOUGHT I unistalled it. I just went to "reinstall" it, and it's already there. My head hurts! I'm going to bed now.
I use the Orbx FTX launcher called FSXGo, with all the recommended settings applied to my profile. I will contemplate creating a fresh fsx.cfg file tomorrow. It's late now. I will be glad when this is solved, but it's no big deal that it's happening. It doesn't crash my sim, and DX10 is sooooo nice when it's working. I don't want to go back to DX9 anymore.
OH, one other thing before I close. While I was flying, I spent way too much time trying to figure out why my Plan-G would not show my yellow plane in the center of the map, or follow my plane. It wouldn't load my present location either. But it did display my Lat and Lon, airspeed, elev., etc. at the bottom edge. So it was reading my plane, but not showing it.
I want to tell anyone in that situation, PRESS the F6 KEY while in Plan-G. I wish I knew that before I started troubleshooting my network connection, and Plan-G program! After pressing F6, the little yellow plane popped up, and the map started moving. Yay!! Now I know.
I wanted to share that info. Thanks for reading.