Hi everyone, so I recently moved to an apartment from a house, and the comcast tech just installed the internet today. But now I encounter a problem, I am still using the same router I used before, but the download speed on 2.4 is extremely slow, and the 5 is a blast. I have googled it, but my ping for 2.4 is not high, so I don't think there are too much interferences. My router is AC66U. Thanks guys.