Locking when quickly sliding sliders

[NGnius]

Expected Behaviour Sliders slide smoothly

Actual Behaviour Sliders slide quickly for one change, and then take a while to update on the next change.

To Reproduce Steps to reproduce the behavior:

1. Slide any slider in powertools by holding down the left or right d-pad button.
2. Watch it move inconsistently

Additional context This is possibly due to lock contention on the back-end. Making the API lock-free (by sending config updates to a single thread which applies them) would be a good mitigation strategy.