Locus Map Watch and Galaxy Watch 6, 47 mm, interrupted Bluetooth

Dear team,
I now own the Galaxy Watch Classic 6, 47 mm.
With Wear OS 5. The only reason I have a smartwatch is to use Locus Map. I previously used Locus on the Galaxy 1 with Tizen for several years. It always worked.
The Bluetooth connection on the Galaxy Watch 6 Classic keeps getting interrupted. Mostly due to the lock screen. I know, something optimize Battery. 
This is what I did to prevent it:
- My Honor Pro 200 phone is not in power saving mode
- Locus Map Pro as a Service
- Locus Map Pro: Manual battery settings, autostart, background
- Samsung Wear and Samsung Wear for Classic 6 also set to manual and in the background.
- Samsung Accessory Service, Manual, Autostart, and Background
- All permissions allowed
- GPS access: Always
- I usually start a track recording when using Locus Pro; this has resulted in a more stable connection on the Galaxy 1.
- I removed "Locus Map Watch" from standby mode on the watch.

- Deleted all caches
-Reset the phone and went through the whole process again.

None of that helped, and I can't find any other settings. I'm currently using the Galaxy Watch 1 again with Locus Map Pro and Locus Free on the watch (with the same Honor 200 Pro), and it's working perfectly as usual.
If I missed something, here's a tip :-) I'd be happy to hear it. Otherwise, I'll return the new watch and stick with the Watch 1.

Best regards,
Axel