Those are cheap brakes with one pad moving. Nothing will help as much as getting TRP cable Spyres on one wheel at least. Doing both will be 1/3 the cost of that bike. I have one on my Rohloff14 IGH. It stops instantly any time, can't beat that. IMO, resin pads are the reason it grabs tight so well. It has 4,600 miles so far, ZERO squeaks. My front wheel is an awesome SA dyno DRUM brake, done 28,000 miles. Finicky hydro is NOT needed.