Hi, I'm hoping someone can help! 

I have a TL-WPA4230P kit that I bought probably 5 years ago? Never really had any issues before, download speeds at around 30mbps, which was enough for my usage (mostly streaming). But over the last month or so I've found that speeds are now averaging around 0.7mbps. I tried restarts, new cables, removing other appliances from the through socket, then did some tests to find out which sockets were on which circuits. They were plugged into different circuits, so moved the unit attached to the router into a different socket and behold! Immediately 60mbps download speeds! I thought my woes were over and was working fine for almost 2 weeks. Until this afternoon, out of nowhere, I am once again plagued by less than 1mbps speeds through wireless and wired connections. I am now at a loss for a solution.