I do not. The only time I use clutch is takeoff. Upshift/downshifts at any speed. I also use engine braking, tapping each gear progressively ending in first with no issues.
There was bit of programming required during setup to "Adjust Shift Force sensor shift pattern", maybe they did not do that correctly? Or as some other posters have mentioned, make sure it is tuned on
. BTW, I was able to upshift without clutch before I had this installed, with a slight backing off throttle.