Game crashes very often with new launcher

With the new launcher the game crashes every fer minutes. Usually when you tab out or switch from full screen to windowed and opposite. I dont know if its a problem on my side, but i have a fairly good pc and have not been experiencing this issue before with the old launcher. i have ran several preformance and stabillity tests for CPU,GPU,SSD,RAM,... and found no problems what so ever. If other people are having a similar problem it is worth considering, since it can be very anoying when playing.