R&M Superdilite GT Rolhoff Kiox, keeps cutting out in rough terrain…All’s well on the roads but when I take the bike off road and go over some big bumps, on landing, the Kiox indicates a loss of speed but does not actually turn off. It’s as though there is a lose connection somewhere. After about 3 seconds the speed indicators comes back. Diring the 3 seconds, there is a loss of motor support also as if the motor has switch off. Anybody had the same issue and what exactly was the fault?