So yesterday i was playing FSX:SE and (since i installed the game) i couldn't see progressive taxi. I searched about that problem to fix it and read that deactivating "Preview direct X 10" could maybe fix the problem, so i tried that and i had to restart the game to apply change (untill now FPS and sound was fine).
When i restarted FSX, i had 2.2 fps and couldn't hear any sound from the game. I tried to cancel the change and reactivated the preview then restarted the game, but the low FPS problem was still here. I have tried few other things (reset settings to default, reducing display settings to very low for example), but the problem is still there.
If i deactivate sound (with default key Q), the fps goes back to normal. So i'm looking for a way to fix that new problem (I think i found the fix for progressive taxi, but i have a more important bug to fix now 😞 )
If i had to guess what the problem is, i would say that since i deactivated dx 10 preview, it created a new config file somewhere and it wasn't changed (because "compatible" with dx 10 preview) when i reactivated it, but i have no idea where to check that.