Check voltage to the motor and lubrication of the arms in the the track.
When mine became slow, I found the electrical connection had corroded form water intrusion. Voltage to the motor was below 10 volts.
Clean the connection and sealed it.
I also find that lubing the track the arms slide in a couple times a year helps keep the movement smooth and quick.
US Navy Vet, Liberty Tree Member of Oath Keepers, NRA & VFW Life Member, Alaska EMT.
2009 Safari Cheetah 40 SKQ
2009 Winnebago Chalet 231CR