I have Verizon FIOS with 75 Mbps upload and download service. I’m running W10, up-to-date, no malware detected. While I do get pretty consistent 75 Mbps downloads, I’m only getting upload speeds of around 1% of that. (My uploads are primarily to Dropbox, Google docs, Amazon Glacier and Carbonite — all show pretty consistent dismal performance.) This has been going on since mid-2018 and has been gradually getting worse.
Oddly, about 75% of the time internet speed tests show good upload performance. Even more oddly, when the speed test is running the upload speed for whatever app I’m using also goes up by 10x or so. (Not all of the time, but maybe 30-50% of the time.)
I did one try with a support case with Verizon, but once I got up a couple levels and got a competent support person, they saw the problem, reset everything (FIOS box and FIOS router), got a temporary boost, but it quickly went back to the 1% level. I’ve also tried rebooting my PC, rebooting my router, and switching between wired and wifi — none of them have a discernible effect. I get much better performance when on some other network.
I’m pretty sure it’s a Verizon problem, but I don’t know what to try next. Does anyone have a suggestion?