I have received my and just installed today. Both wifi ac and bluetooth works and I'm already happy. I'm just wondering if I might have messed something with the cables because I get max: Tx 780 Mbps, sometimes lower 527 Mbps. RSSI (-32 dBM) and Noise (-92 dBm) looks fine and I'm basically 2 feets away from router (D-Link 825) - connected to channel 36 (5 GHz, 80Mhz). connected first 3 shortest cables to new board and the longest cable (bluetooth?) just left unattached. Any ideas what other think should I check? Didn't install any drivers - everything worked with just swapped board.
Using:
Macos 10.14.4
macbook pro 15'' mid-12 (non-retina)
Just a hunch, but this may be related to your country code of your Mac or what the wireless router is broadcasting. Different regions have different wireless standards than where the card is made in the US.