I have an Azure File share (large file shared disabled) via my MSDN subscription, that I've been using for several years now. I've always been able to see a constant upload speed of 70-90 mbps (via Task Manager network performance). Suddenly, I'm only getting 20-35 and very erratic, not constant.
Uploading to OneDrive, I see the 70.
Same for both uploads, on another (new) machine, so don't see it being my machine.
This is all the same whether I use the Azure portal upload feature or map a drive on my machine and drag/drop files.
I've tried creating additional file shares using various different settings (different locations, large file share enabled, etc.). Any improvement is marginal.
The Azure troubleshooting wizard has no suggestions.
How can I determine the cause of the slowdown, so I can look for a solution?