Cameras Keep buffering and freezing

Hi I just installed my s330 hard wired cameras I’m using a WiFi 6e router my cameras are also connected to homebase 3

When loading live view the picture freezes and I get the spinning circle constantly.

When looking at playback content the video freezes and the photo jumps every 2 seconds

On a full fibre 900mb line and a WiFi 6e router any ideas why this keeps happening these cameras ain’t cheap