Hi Ian,

I brought the Netgear switch after reading about issues with TP-Link switches.

I moved the Netgear switch downstairs, connecting from Sky router to this switch.

MC200 (with core turned off) is connected to this switch.

I also have an Ethernet cable running from the top floor (music room) which I have connected directly to the 818 to try out (this normally connects to a second switch) which then connects directly into the same Netgear switch as MC200.

I am still getting issues with just a Netgear switch.

Music Room: 818v3, DSP8000SE (SpeakerLink cables), iPad control
Shunyata Denali Power Distributor, fed by SIgma NR V2 + Sigma digital(818) + 2x Alpha NR(DSP8000SE)
Network Acoustics ENO filter + Rubicon Switch(powered by IFI IPower Elite)

Office: Stax SRS2020 via ifi Signature
Spare: DSP5200 + MC200

Running Roon Core on SonicTransporter