1. Haven't detected any problems with the MB8600. Able to always access the control panel
2. It's a small condo - only one wired and one wireless device connected.
3. No switch or panel - just the cable from the wall into the router. No TV's or phones, just internet subscription from Cox, nothing else.
4. CAT7 cables are shielded.
5. IPv6 on or off - still had the speed problems before downgrading the firmware on the R7000.
6. Everything points to the 1.09.xx firmware on the R7000. Have been using the downgraded firmware the past two weeks and speeds have consistently been high 300's to low 400's - so, I'm happy I continue to get higher speeds than what my package is.
