I'm on OSX High Sierra 10.13.4 and like to work from the park where there are wireless hotspots. My laptop's wireless can connect to these networks but the connection drops occasionally.
I recently purchased this TrendNet TEW-809UB usb wireless adapter https://www.amazon.com/gp/product/B01EOQ61KI to fix the occasional drops. This wireless adapter is able to connect to the hotspots but can't connect to the internet or ping 188.8.131.52. It's able to connect to the internet on my home router at 2.4 and 5 GHz.
I ran Wireshark and there are a lot of TCP Retransmissions. I don't have these when connected with my built-in wireless adapter. Here's an image of it: https://i.imgur.com/kjIteVo.png
Here's the full wireshark: https://drive.google.com/file/d/1hBaP7KzTHWB33WqVQqalwkM2na0uuPvU/view?usp=sharing