On my system (W10 i5 4gb VR 16GB System Ram)it would not work in FSX-SE and then after upgrading to Prepar3d v4 I had the same problem. The problem is fractured landscape and misplaced buildings. The plane started sticking out of solid rock. The runway was way off heading. In other words, it was a total disaster and and completely usable. It's been like that for some time.
Looks good, sounds good and flies reasonably well. The problem I found was the lack of functionality of switches, radios and VC gauges. The radios and mechanical tumblers are pretty much non-functional. The altimeter is sporadic and inaccurate. Most of the switches don't do anything at all. The fuel gauges are always full no matter how they're set. Even the manual is barely in English and is poorly formatted in rtf. The left side altimeter is non-functional.