I purchased this TP-Link AC1900 router to replace an old Linksys unit that failed and since installing it I have had really unreliable download/upload speeds on my Xbox 360 and it is affecting being able to play games or streaming.
The AC1900 sits behind an Actiontec M1424WR FiOS wireless router the connects to the Internet. By default I have the wireles on the M1424WR disabled. If I enable it and connect the Xbox 360 to it I get an average download/upload of about 20Mbps. This speed is the same whether I turn off wireless on the AC1900 or not. If I connect to the AC1900 the upload drops to 9Mbps and the download drops to 3 - 3.2Mbps. I've tried changing channels, channel width and switching the 2.4GHz mode to G/N or N only. I've tried setting manual DNS but that didn't make a difference. Disabling WMM doesn't either. It doesn't matter if there are other wireless devices connected to the AC1900 at the same time or not but the other wireless devices all come back with wireless speeds averaging around 75Mbps up/dn which is what I'm paying for.
Is there something inherent in this routers firmware that is capping traffic to my Xbox or is there a setting I'm overlooking? I searched the forums and didn't find anything specific so if this issue has already been addressed I apologize for the repost.