Maybe I'm too used to practising sitting down, but when i play with the bass relying on the strap to hold the instrument (ie when you're standing up, or have the bass resting as if you were) i find it much more awkward. Is this my bad habits, or perhaps an unwiedly poorly weighted instrument (tbh, both are very likely true).
then I bought a 3", and it is significantly better. Use the 2" for my guitar now, where it belongs. I'd say give it a little time, practice with your strap and get used to playing this way. It'll strengthen your shoulders up too