I actually also have an update. The problem I was having was that the screen would scramble and the computer would freeze: https://u.pcloud.link/publink/show?code=XZT4FOkZClAEnUub4hfeAcNlAQ8P4jXgs5By
I thought it could be the GPU drivers because of the update, but then it also happened in Windows (I dual-boot).
After some tinkering and almost crying I thought maybe the SSD, where both my Operating Systems are installed, could be damaged. I managed to run the BIOS diagnostics, but the issue happened there too. The problem occurred when the diagnostics tool was testing the memory so I thought maybe that was the problem. I took out one of my RAM sticks and it worked 🙂 I installed the second one (I swapped their positions) and now everything seems to be working fine.
All in all I'm still not entirely sure this was the problem, but so far so good.