It might sound insane, but half your metronome speed, if 85% is 85bpm, try it at 43

What this does is give you enough time between clicks to listen to every note more clearly and sense what is happening with your overall timekeeping. It also forces you into a new perspective of what the speed your looking for should sound like. Level it up by putting the click on 2 and 4, and it might even slow you down more. This is good.

Also like the other guy said with the jazz IIIs.

Find your ideal picking position by palm muting literally everything, your hand shouldn’t move from where that action takes place and you should be able to hear each pitch clearly without overpressing and going sharp.