I've got an AP lite and am having an issue with the connection speed. If I connect my laptop to the AP it always connects at 2.4Ghz, even though 5Ghz is the preferred option in Windows. That aside, using speedtest.net I always seem to get between 15-35Mbps download (and full upload). If I connect directly to the router (Virgin SH3) then my speed shows ~250Mbps. Same issue with another laptop and our mobiles. I'm 99% sure then I was getting much better speeds when I first set up the AP and I'm not sure what's changed.
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I also disabled 2.4Ghz on the AP to force a 5Ghz connection on my laptop which still had no noticeable increase.
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Any thoughts? I'm thinking I've missed something obvious....