Shortly following the last patch that had came in i am no longer able to run SK for more that 5 mins

I am a steam knight and I am able to run spiral knights on high quality every where but FSC so I do not believe my graphics are the problem in this case however when I run spiral knights I have about 5-6 minutes to play the game b4 it freezes about 30 seconds till my monitor freezes and then maybe 10 minutes until my entire computer crashes the same thing happens when I run this on my school computer and my laptop and it doesn't happen when I log on to anyone of my friends account so I was wondering if my account may be hacked or banned or if there is just something wrong with it I would be very grateful for any information on why my account is doing this.