@Xdrive76 I switched to a CAT 6 patch from the modem to the Deco as well and that fixed slow speed issues. I'm going to bump it up to a STP CAT 8 patch and see if that makes any difference.

@JJohnson05 Another thing to check is QOS. I have a 1.2Gb download speed which I get 750Mbps off the modem. When plugged into the Deco it dropped to 240Mbps. My QOS max speed was set at 300Mbps. I...