Fenvi T919 4 antennas sucks

Just got this PCI card and hooked up with 4 antennas.. In windows it only got about 1 bar and speedtest is less than 10mbps.. I have 100mbps connection. Even my antennaless USB wifi can reach 100mbps. This one with 4 antennas are so weak. What is the problem? In hackintosh, it can hardly connect to 5Ghz.. 2.4ghz sometimes.. my iPhone tether connected ok.. Anyone using this experience such issue? Wifi only connected at 54mbps. But it's slower than it is..

submitted by /u/yvliew
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