I have never used bluetooth for anything, but here goes nothing.
What DE are you using? There are different bluetooth drivers, such as bluez, bluefish, blueman, bluedevil, and maybe more. Have you tried any of these?
Pudge
Ooops, sorry @Locutus, I used the wrong Reply arrow.
No worries, I’ll reply as well in case it helps. I’m currently using RebornOS with Plasma 6.5.4. On a side note the default Bluetooth apps that most Arch based distros include should work without issue with any Soundcore headphones.
I got the same issues, constatnt reconnecting of BT headphones. lastest everything for totay, fresh instalation of the latest build. the same in cachyos
Edit:
nano ~/.config/kdeconnect/config
add this line in [General] section:
[General]
disabled_providers=AsyncLinkProvider
this will solve the issue with KDE and BT in Arch.