Before all, sorry for my poor english    
Hi all, an update: 
I've tried this things, all without changes 
1) Reinstall old drivers 
2) uninstall everything (A10 and DCS World) 
3) reinstall DCS World and A10 
4) tried HIGH, MEDIUM, LOW settings with/without TSSAA, HDR,    
I've discovered that when i move the mouse in game i see the icons of my desktop :cry: and that affect the right zoom function (in cockpit the position of the buttons aren't correct). I must hit the ALT+TAB combination to "resolve" this...   
I've noticed too that when (in external wiev F2) i zoom out the problem disappear   
...yes, now i REALLY need help! :helpsmilie: