Indeed, increasing the fps will allow you to up the "shutter speed" if following the 180 degree rule.
Video at 24fps "should" be shot at 1/50 sec, 30fps at 1/60 sec and 60fps at 1/120sec. Any faster or slower will cause it to look "funny"
Perhaps we are having some "crossed wires" here inregards to the description of the problem.
Jello effect to me would be due to vibrations caught when filming, at the shutter speeds usually used for video vibrations can cause every single frame to be soft.
Rolling shutter on the other hand would be those wildly curved rotor blades or vertical bits rendered as leaning to the side if panning a shot.