Try MSAA: 2X, SSAA: Off Have you mods ? And if yes are they in Saved Games ? Move your Saved Games folder to your SSD if it's not already done (that worked for me) ;)
The problem I had was I couldn't see option in Misson Editor because a mod with "old" lua was installed, I made first a repair and after I tested installing mod one by one.
And NO a repair will not replace option in "Special", just in mission editor where it must be now (more easy for me)
I need help: can't find how to dismount gunsight in Mission Editor since last update 2.5.3.21016 :cry:
Edit: a repair make me find that a mod broke this option a moderator can erase this thread :thumbup:
To modify mission, open the .miz file with Winrar (for example) and you'll see a file "options", open it with Notepad++ and modify lines:
["L-39C"] =
{
["dismountGunSight"] = false,
to
["dismountGunSight"] = true,
Just save it :smilewink: