Forerunner 255S music keeps cutting off. Looks like I'm not the only one..

I’ve had endless problems trying to keep music connections smooth on my partners Forerunner 255S.

I’ve tried a few different wireless earphones, and recently a more expensive Shokz Openfit, as I believe this is more compatible with the Forerunner.

The Shokz work fine on my own Fenix 7, so I’ve finally narrowed the problem down to the Forerunner.

I’ve tried the suggestions of rebooting, re-pairing and different earphones. Any more suggestions?