45 years of playing guitar and I STILL have troubles with barre chords! It's damned embarrassing. Some of it's likely medication but that's not the entire story by any means. My 2014 LP Standard...Gibson OF COURSE... has a thin neck profile which fits my hands nicely at least up the about the 12th fret. Beyond that it gets really cramped. But half my barre chords sound like I'm torturing my cat. If I go slow and deliberate I'm okay. Once I try to speed things up, I'm totally fucked. I don't get it. It may be my right hand is the offender as much as my left. but dunno.
I could really use some help on this. Thanks, my friends. -Rod-