So, today I'v tried to play TB near on 100 times and without fail the client has crashed, every, single, time. Any ideas on why this is happening?

I enter a server and usually I alt tab until it's my turn, but it's continually crashed. I thought it was to do with me alt tabing, so I stopped doing that and it still crashes after being in a sever for about 40 sec to a minute, i have no clue why and its really turning me off the game aha.