Game keeps freezing, crashing and glitching

Every time I start the game it either crashes right away, or freezes at loading screen. One out of 20 tries I can actually log in and start my worlds. When I can actually log in, the game starts glitching (some solid blocks becomes transparent) then the game freezes after a few seconds.

 

Game also instantly freezes if:

• I open any text input (search input, signs)
• I open settings

Tried reinstalling but it keeps happening.