Yeah I had stopped using that chat blocker mod because it wouldn't let me write a lot of stuff. Sure some "Toxic" F You!!! stuff, but also stuff like, "Wow 3k damage, good job KV-2" And I'd get the "follow your own rules!" Blocked message. Too annoying to use for me.
WG had me run the diagnostic and told me, hey you're using mods! While we don't recommend it, it's allowed. The told me to uninstall mods and run it again. Haven't gotten around to it yet.
I've been playing at 1920x1080 fine though. It has something to do with the 5860x1080 resolution for 3 monitors, which affects A LOT of games unfortunately. Especially when they're new games or new updates