I have an ethernet connection on my pc, the advertised download speed for my ISP is 24Mbps and upload is 3Mbps but when I check it over Ethernet I get 70-75Mbps, no issues here. The issue which is bothering me is my upload speed over wifi. Over wifi I get around 9Mbps (stable) upload and 20-25 download. Why such a difference for upload speed? I tried to stream to youtube live and also noticed that over ethernet my upload speed is very unstable, it goes from 200Kbps - 1.5Mbps. So I have 2 questions here - why my upload speed is more with wifi than with ethernet and why the upload speed on ethernet not stable at all? I tried to contact my ISP and they always say it is working fine when they ran the diagnostics from their end?