So currently my game isn't loading (like the Screen just stays black after picking a savegame for several hours)
It still uses up CPU and RAM but doesn't seem to do anything else.

For further reference I am on Pc with an HDD, already tried repairing the game files (2 replaced for 10GBs) and the savegames in question are just over 15MB.
Even before it didn't load it was typical that the game could load for around half an hour or so.