The bushings on this derailleur are pretty worn, the clutch is probably 80% of what it used to be, and the B-bolt absolutely needs to be replaced. It just annoys me that the B-bolt is $30 for the X01 version and the bushings push it close to the price of an entire derailleur. It’s possible to reuse it, but after so many miles I think it’s finally earned it’s rest.
But even when it was performing it’s best I was always having to adjust cable tension or deal with problem gears. Probably my biggest issue has always been he lower limit adjustment, it always finds a way to need re-aligning and I’ve ruinied spokes with it jumping over. It’s just a very fiddly system, I’ve literally gone through tires before needing to adjust my derailleurs on my 2x10 road bike. I can barely get through a long ride without touching the barrel on GX. Even with a fresh hanger, chain, and cassette I could never get GX to the point where I could trust it like other groupsets.