Action is not one universal number
Two guitars with the same measured action can feel different because scale length, strings, frets and neck shape affect the experience. Use measurements as repeatable baselines.
Measure before lowering anything
Record relief first, then bass- and treble-side action at the same fret. If you change bridge height without knowing the neck geometry, you can end up compensating for the wrong problem.
Low action has a cost
Strings need room to vibrate. The harder you play, the more clearance they generally require. Some unplugged mechanical noise may be acceptable if amplified notes remain clean and strong.
High action has more than one cause
Excess relief, bridge height, nut height and structural geometry can all contribute. If the problem is dramatically worse near the first few frets, the nut may be more relevant than the bridge.
Bends are part of the test
Low action can expose fretboard radius and fret irregularities when you bend. Always test the kind of playing you actually do.
Record the baseline, change one thing, retune, and test again.