Game keeps messing with my Computer

So I am having fun playing your game when my screen will flash red for a few seconds and then go to the Minecraft loading screen and then I can play again. It will do this a few times a day to the point where it happens every few seconds making the game unplayable. I've also noticed that the game will close Discord and I need to reopen Discord, while that's not game breaking it's rather annoying when I'm playing with my mates and I need to open Discord repeatitly.

 

In two extreme cases I've had to turn off my computer at the wall due to minecraft bricking my system. So I would love to keep playing this game with my friends but for that to happen I would love for you to fix the game, otherwise I would like my 50 Australian dollars back because I don't pay for shit I can't use or play with