Bluetooth headphone disconnects during activity

Since v16 I'm having a lot of headphone disconnects during activity, it seems to occur randomly, sometimes after 15 minutes, sometimes after 30 minutes

Only way to get music back on is to turn off the headphone and then turn it on again and start the music, it will connect and all is good again until the next disconnect

Went back to shokz and they replaced the device but still have the issue :(

Borrowed an epix (gen 2 non pro) with v15 and did a few runs with my headphones, no issues at all! is there a way to downgrade my v16 ?

Also tried the hidden menu option "maximize compatibility", makes no difference

Epix Pro 51mm, headphones: shokz openrun pro