Moca connection

Hi. Any help would be appreciated.    I hooked up a bunch of MOCA adapters,  everything worked fine on every tv. Ethernet is being used but the TV’s connection is really slow .  I changed the modem on to Enable MOCA and then the Connection gets extremely bad and really does not work. I thought switching to “ enable Moco “ through the gateway would improve the speed but did the opposite.  I really can’t understand what I’m doing wrong ,, any suggestions?