Tried that, no change. I ended up cracking and getting an ASUS PCE-AC88 instead. Much better, though I also put in an RMA request for the Archer T9E, since the 5 GHz signal was extremely weak, even...

I've tried all of the drivers mentioned in this thread and cannot get my Archer T9E to connect at full 1300Mbps to my network. The highest I get is 144.0Mbps. Currently, I'm using the ASUS driver and...