Any tips on improving my speed/stamina/finger strength?

One thing to bear in mind is that action height is only one part of a setup. Neck relief issues can also cause buzzing regardless of action height. And bad intonation is always bad, regardless of action.

Iā€™d encourage everyone to learn to do a proper setup. You can still set the action high if you like :slight_smile:

You need to know how to do it eventually anyway; getting a bass set up is not a one-time-only thing, generally guitars need adjustment over time due to several factors (temperature, humidity, different string sets, etc).