Found a few resolutions, hopefully one of these work

If you notice bubbles in the water returning into the pool from the eyeball/discharge, or water in the strainer basket is visibly swirling (bubbles visible) odds are you need you replace the o-ring on the lid of the strainer basket in the front of the pump. This basket may also be clogged with debris, which also effect pressure. Could also be a cracked or warped strainer lid. Should be easy to see when you remove to check o-ring. Once you remove the strainer o-ring make sure you lube it with a good silcone based lube.

Check your pump pressure on the suction side. If there is any air gap in your pump strainer pot (if you have a see thru see thru strainer cover) then you have a leak on the suction side. Auto matic cleaners need ample pressure for them to move. or you might need to backwaste the filter check your pressure gauge. If none of these help its more then likely the gears in the cleaner. also check your cleaners hoses