Have you tried changing the cable/adapter out? USB4/Thunderbolt is an incredibly complex protocol now and cables are now active with built in microprocessors so

Have you tried changing the cable/adapter out? USB4/Thunderbolt is an incredibly complex protocol now and cables are now active with built in microprocessors sometimes even running full OSes inside the cable. It's possible that could be the cause. You didn't mention what type of monitor connection you're using.