Help to configure QOS

Hello,

I am trying to configure the QOS on my RT-AC66U with the version of Merlin 380.57.

If i'm not wrong this are the steps to follow:

First check my bandwidth:
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Then enable the QOS service and in Manual, set:
Upload Bandwidth: 1.75 Mb/s
Download Bandwidth: 18 Mb/s

This should work but if i test the speeds now with nothing more on the network i get:
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I don't see...

Help to configure QOS