Mc7000 freezing

Hi everyone! I’m hoping to get help with this…:pray: I’m using an Mc7000 running latest firmware serato pro on a MacBook Pro Catalina mid 2012 16gb ram 256SSD which runs great only when streaming using soundcloud and one (I know this is a big load)the loading deck freezes until track is fully loaded and sometimes the wrong deck will load for example…on Virgin 500mbps lan connection… Load left goes onto right when I restart everything it reverts to proper behaviour…if I’ve left anything out please gives a nudge thanks.