For context, LDAC is one of the few wireless audio codecs stamped Hi-Res by the Japan Audio Society and its encoder is open source since Android 8, so you can see just how long Windows is sleeping on this. I’m excited about the incoming next gen called LC3plus, my next pair is definitely gonna have that.
Windows’ built-in bluetooth stack is famously bad. Try installing the Toshiba one instead. It’s a bit clunky UI-wise, but tends to have less issues.