ContributionsMost RecentMost LikesSolutionsRe: Cox Gigablast upload is very slow and fluctuating throughout the day Thanksjonathanjfor taking notice. I spent a couple of days to setup an alternative ISP and get back up to speed. I am not yet canceling COX because I am still under the first year contract, and I have not completely given up. The alternative ISP has not been allowing YouTube to streamat its highest bitrate automatically tonight giving me pause.So,I just tested COXagain to upload a 147 MB file, and I got 9 Mbps to Google and 8.5 Mbps to Amazon! Now this is what I call normal esp. during prime time.I have been in tech long enough to know to just try it again in a day or few. I will likely keep both services and even looked into getting a dual WAN router. Re: Cox Gigablast upload is very slow and fluctuating throughout the day Hi Jin, I came to this forum looking foraproblem like this. I am in Oceanside, have the 500/10 plan, and I am recently noticing massive slowdown to upload any decent size file (100MB+) to any number of places. I just started noticing it Friday March 18, but it could have started sooner. How slow? Well, Friday I was getting around 1.8 Mbps, but today less than 300 kbps. Like you, the speed tests look fine, and I even tried selecting servers outside of COX. It totally smells like a route problem, but I have tested uploads to Amazon S3, GitHub, YouTube. Google Drive, and Microsoft OneDrive. All behave in a similar manner., which is very strange and suspicious. If there is a route problem then I believe itis specific to COX. I have only been using COX for 11 months, and previously used Comcast in the SF Bay Area without this problem. P.S. Ihave never exceeded my 1.2 TB data limit and currently have used 46% in the current cycle which ends in a few days.