Automatically switching to windowed mode

[Kezako]

Hello,

I've been experiencing a pb that might make me quit playing EQ. When I log in, game switches to windowed mode at character selection. Logging in anyway. Switch manually back to full screen. When I click anywhere, switches back to windowed mode ( can't play like that ).
I found a trick : I start camping, set to full screen. If I don't touch anything, I get character selection full screen and can log back and play normally. Takes time but working. Or would work if game didn't crash 4 times out of 5 when I try to camp. Makes me start all over again. Can take 10 or more just to start playing.

I run EQ on WinEQ2, doens't make a difference. Anyone has a way to prevent crash or switch back to windowed mode ?