I upgraded to 15/5 through my online account, and it shows up as completed. However, the upload speed is consistently at around 1800kb/s which should be 4800kb/s.
Anyone else experiencing this?
Are you sure you're doing the math right?
If your connection is 15/5...
Then your download should be around 1.875mb/sec.
And your upload at most 625kb/sec, but you're getting much better than that. (eg. 5Mb download = 5,000,000 bits / 8 bits (a byte) = 625,000 bits a sec (625kb/sec)). Roughly.
It was the ONT. They rebooted it remotely, and my upload speed is above 7Mb/s. This was exactly what happened last time I upgraded to a higher speed.
So if you don't see your speeds, have them reboot your ONT.