Is 15 MiB/s normal?

So after a lot of messing around and getting streaming services to work, sharing folders with users on the same network, I am still stump on solving the slow speed on uploads to the drive over the internet.

When uploading a file (no matter the size) though the router wifi to the WD my cloud home device I’m getting around 15 MiB/s upload speed.

After checking the cable, RJ45/Cat5e, checking the routers wifi speed is 5 GHz (802.11ac) 210 Mbps - 1 G

So I should be getting faster than 15MiB/s upload Speed.
With the current setup I should be looking at around 100 to 112 MiB/s upload speed.

Are you talking about Mbps or MBps?

Mbps (Megabits Per Second) Definition (techterms.com)

Megabyte Definition (techterms.com)

The working out are all based on data speed which is measured in megabits per second.