I've had the same problem myself. Main problem for me is during the loading screen before battle, but not every battle. It's very random. One day it happened in 9 out of 10 games. Sometimes it happens 2 times in 3 hours.
The game can be idle in garage for like 10-15 mins. I then choose a tank, hit start and violá game crashes and restarts.
In either cases it's also random if I can access the game again or not. Sometimes I end up in a queue (which means I miss the whole game), and sometimes I get into the game and can finish it.
I also experience graphic problems in some games, either black areas of the map or rainbow-colored (at spawnpoint only).
_Aslain_logs.zip
_Aslains_Installer.log
python.log