never used console nor had companion mod installed. didnt even know it was a thing. Pretty strange, had zero errors on win 10 few months back. returned to game on win 11 and now cant play for more than 5 minutes, sometimes errors pop every few seconds...There is no discord and I have already read your post.
You probably used the console and did something wrong. It's not a bug in the game.
The only thing you can try, right before you get the first crash is to open the console and type:
char1 = faye
If this doesn't help, use an older save and don't use console commands unless you know exactly what you are doing.
error 1 no mods/or console.
error 2 have companion mod installed.