[ubuntu] Slow wireless download speed

view story

http://ubuntuforums.org – Whenever I boot up my computer, speedtest.net shows an internet speed in excess of 20 Mbps. After around five minutes it consistently drops down to just over 1 Mbps and stays at that download speed. The upload speed remains unchanged at around 3 Mbps. I checked Glasnot just to check if my ISP was somehow throttling my internet but this doesn't seem to be the case. My other laptop and those of my housemates all show download speeds of over 20 Mbps. I have a system76 Lemur Ultra laptop. I have tried restoring the system and also installing the latest drivers from system76 (Driver Version 3.2.3) (Hardware)