Well, I've just had the best 2 hours of offline flight simming I can remember...

[Blackdog_kt]

The config files were changed two patches ago, removing a lot of redundant settings that had been left there during the development process.

People that first installed the sim recently (that is, after the previous patch near the end of May) already have the config files that have the new structure. Those that installed before that probably have the old config files.

If you want to get the new config files you can try this:
http://forum.1cpublishing.eu/showthread.php?t=23971

[slm]

Originally Posted by Blackdog_kt

The config files were changed two patches ago, removing a lot of redundant settings that had been left there during the development process.

People that first installed the sim recently (that is, after the previous patch near the end of May) already have the config files that have the new structure. Those that installed before that probably have the old config files.

Thank you VERY much! I bought the game when it was released so I guess I had the old config files somehow interfering how the game works. After reading your linked instructions, I disabled Steam cloud and cleared the cache. I then had to reselect some settings (for example, all my game controller ids had changed: joystick1 was now joystick and so on), restarted the game and the low level gfx bug had disappeared. It seems I got better FPS also. I hope the game stays this way