MoCA network losing speeds. Where?

I

’m trying to troubleshoot why I’m losing speeds on my MoCA connection from one room to another.

I have an Eero Pro 6 coming from my office with a Motorola MB8600 cable modem going into it and going through a GoCoax 2.5 MoCA adapter to another GoCoax 2.5 MoCA adapter in a detached apartment with another Eero Pro 6. When connected to the Ethernet port of the office Eero I am getting near gigabit speeds (I have 900 Mbps service through Xfinity) but when connected to the Apartment eero it only maxed out around 750 Mbps. Any idea where I could be losing signal. I have MoCA certified splitters as well as POE filters isolating the network. Any other tips are greatly appreciated.