Game crashes when watching twitch stream or playing with specific friend?

[MrTweety]

This has been happening frequently ever since the last major patch, I'm not sure what changed or how its happening. But whenever I'm queueing with a specific friend or watching their twitch streams, I am constantly crashing at least once a game, sometimes more. It happens in training range, just in the menu while queueing, start of match, mid match, end of match, and its been really starting to wear me down. Now when I do occasionally play solo, I'm just fine, no hitches, no crashes, no lag, I can play multiple games and have nothing happen, but when they get on and I throw up their stream, THEN it starts up again, I'd really like some guidance on why this is and if it can be fixed in an update or If I need to do something. (hopefully nothing on my end because I hate messing with my pc)