Bluetooth has been extremely buggy with the latest iOS release. It's beyond frustrating to spend so much money on quality hardware only for a SW glitch to ruin the experience with an update.
I've tried updating the headphone firmware, updating iOS to the latest 14.3 version, updating the apps, restarting the device, removing and reconnecting the device, playing audio from different apps, soundcloud, spotify and Apple music and the issue persists on all.
I can confirm that this is an iOS problem as this does not happen when using Mac OS.
My issue is a slight skip or jitter, almost as if there is a latency problem, I see this when casting video from a computer to a TV and the solution is to create a small buffer. I would not mind a buffer if it meant that my audio was slightly behind if it guaranteed that I had no skips.
I hope they fix this soon because its a really poor listening experience.