So i had this problem for about half a year and tried (i think) every fix for steam download speed going to 0 bytes per sec but nothing helped it doesnt matter if i restart the wifi, restart the laptop, reinstall steam, change download location, disable firewall or any other antivirus, put my laptop to factory settings, get closer to the wifi or get the ethernet cable (ethernet cable doesnt work on my laptop for some reason). The problem is that the download speed stays at 0 bytes per sec and goes up for a few seconds and then down back to 0 at random times so it takes alot of time to download games, for example im downloading a 10GB game right now so far i downloaded 8.5GB in the past 4 hours when my normal download speed is 5-6Mb per sec. I hope someone knows how to fix this because its annoying to wait 10 hours to download rainbow six siege or gta 5.