Launcher exe - Problem Centre

[Faucon]

Problem: When I try to join a server with more than 10 players in, I've got the launcher.exe failure just after the loading of the map. On lighter servers, it depends. Sometimes I can play half an hour, maximum. Sometimes it freeze when there is action around me (planes dogfighting and shooting). Sometimes, just with one plane around, on a little map, it's falling under 1fps, and a minut later... You know.

System: AMD 4 x 3.1Ghz
Geforce GTX 460 1Mo
4 Go RAM
Directx 11

Graphics Settings:
1366 x 768
Aircraft moddeling .................... FULL
Buildings ................................ LOW (quantity and quality)
Forest ................................... LOW
Landscape ............................. MEDIUM
Landscape shadows ................. LOW
Effects .................................. FULL
Damages modelling ................... MEDIUM
Roads, shadows and grass ........ ON
SSAO .................................... OFF
VSYNC .................................. ON
Epileptic filter ........................ .OFF


I really hope it'll be fixed by next patch, because this issue waste almost all the pleasure :/ It's very frustrating.