The Belkin card is detecting your wireless signal. Maybe the HH3 wireless signal is lower power, try moving the hub if possible closer to the PC. Ideally it should be plugged into your incoming BT socket. You could try changing wireless channels from the default Channel 6 but I doubt it will make a difference unless you have another nearby wireless hub interferering with your signal resulting in drop outs. If not and you can download etc a stronger signal will not improve your speed. I have 5 bars but only 1600kbps.
Qualcomm Snapdragon 835 benchmarks: Antutu, Geekbench 4, GFXBench and PCMark results