On my so called smart trainer controlled by Zwift, I can be doing a cadence of 110 on 50x11 gear ratio and do 27 mph on the flat, then the same cadence on a downhill is equal to 40mph.
Is this normal behaviour for a Zwift controlled smart trainer? It’s an Elite Real Turbo Muin Smart B+ which does increase resistance depending on gradient, but no where near enough, which is a whole different issue.