My Galaxy Watch has very poor bluetooth connectivity to my Samsung earbuds when used outside.
Phone has no issues, but if I use my watch standalone and I am outside, I have to hold it 2 feet from my ear to keep clear connection.
This defeats the purpose of using your watch when walking, jogging, etc. which is one of the main reasons I bought it.
Inside, connectivity is fine, so not sure what the difference is outside.
I have done all the recommended toubleshooting, reset, repair, update software, etc.