Weird Network Behavior Please Help

My laptop is very weak at receiving wifi signal so I bought this tp link usb adapter to improve my experience. The stability does get improved, but the download speed under 5.0 Ghz is half of that under 2.4 Ghz, while the upload speed behaving as expected.

If anyone can provide me a solution to fix this I will be very grateful.

submitted by /u/btnan12
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