Slower speeds and occassional dropouts with RT-AC68U

Hi, I have an RT-AC68U but have recently been noticing slow speeds and occasional connection drops. This is mainly on wireless, however even wired seemed to be a bit slower than usual when I tested it earlier

Currently on the latest stock firmware. Upload speeds have been fine, but my tests from earlier were initially 50 down on wired, 40 on 5Ghz and 32 on 2.4Ghz. I then got 30 on wired when testing again shortly after. 50 is what I expect when doing a test.

Sometimes the wireless...

Slower speeds and occassional dropouts with RT-AC68U