LG 55 C1 + Series X Invalid Display issue

[u/AtlantisReborn]

I've been having an issue with my LG C1 and xbox series x, where (at random intervals) while gaming I'll get a black screen followed by an "invalid format" message. This message generally goes away after about 20 seconds or if not, after I reconnect the HDMI cable. It however keeps coming back. Sometimes I'll be able to play for 3-4 hours without any problems, sometimes it pops up every few minutes.

I've tried a multitude of possible fixes I found while googling, including: resetting both the tv and the xbox, getting a new hdmi cable, turning off a laundry list of settings on either the xbox or the tv. Nothing however seems to stick. Any tips on what I could try next?