In Canada with the C5400 and it's hot or miss with speed depending on firmware 

Have Fiber 500mbps and originally on the latest firmware build offered by the tplink tether app: 1.2.9

Do not upgrade to this! My speeds immediately dropped to 200mbps.

I reverted back to build 1.2.5 off the tplink Canada site with Published Date: 2021-05-08 and things look to be working fine with expected speeds.

Also note that when you download 1.2.5, even though it's on the Canadian site, labeled as US, the file inside the zip folder is labeled as EU.

1.2.6 also was a failure.

Suffice to say I will likely not be buying tplink in the future. Hardware might be good but software is a nightmare.