So I bought and installed my Orbi system in January 2020 and loved it immediately, solved nearly all of my household's internet issues at the time. Cut to September 2020 and we have a Spectrum technician out who is able to replace some interior cable and the PoE to solve our remaining issues entirely. Part of that September solution involved replacing the Spectrum-issued modem with a Netgear CM600, attached to the Orbi RBR50 router base.
This past week, however, internet speed has become drastically reduced in the evenings only. Our plan is 200mbps down, and at it's worst point this week we're getting speeds in the neighborhood of 1-5mbps down (our 10mbps upload has not been affected at all during this time).
I've gone through every configuration of testing I can think of swapping ethernet cables around, testing direct ethernet connection to the modem, etc, and in 3/4 tests, direct connection modem to PC works completely normally. Most tests using the Orbi again test normally for about 5 minutes after rebooting the modem, then return to the super slow speed.
I updated the Orbi firmware to v2.5.2.4 last night (via the app) thinking it may help, but it didn't.
I'm at a loss for ideas at this point and very much hoping someone here can help.
Thank you
