If an MS200 audio endpoint is on its way then the LAN isolator should be on that LAN port.

If you want to improve a Sooloos setup further I would suggest higher quality PSU's on MS200 and MC200 and switch/router. I use Teddy Pardo 12/4 with MC200 with good result, 12/2 model is more appropriate for MS200. Connectors are specified in a previous thread.

DSP8000SE, DSP7200SEHC, DSP5200SE sides, DSP7200SE rears, 861v8, 210, Sim2 Ultranero 4, Stewart Cinecurve 2.35:1, XEIT CM-5E Anamorphic lens, Dune HD Duo Cinema 8K and Wireworld Platinum 48G HDMI -> UHD722 -> Shunyata Omega Ethernet. Shunyata/Furutech power-cables/filters. SR Master Fuse@861v8. Uptone Etherregen with 10MHz OCXO clock.