Any other suggestions Virtuali? I'd be happy to give you as much info on my computer you need.
As I've said the only KNOWN causes for objects appearing ONLY when getting close, is the "Compatibility" mode enabled ( by FSX or another add-on that runs together with it ), or the AAA.
If you will eventually find what was causing this on YOUR system, we'll might add it to the known causes too. It surely doesn't happen here or can be replicated in any way.
Have you tried lowering the texture resolution in the CYVR installer ? Perhaps you are just using too much memory with your other installed add-ons, so there's not enough memory left to run CYVR safely. Which is why, CYVR give you some options to save memory. And, you can try using DX10.