[FS#174] Significant MT76 degradation after recent fq reordering changes

[LEDE Bugs]

The following task has a new comment added:

FS#174 - Significant MT76 degradation after recent fq reordering changes
User who did this - nopnopnop (nopnopnop)

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The AP is an Archer C50. The 2.4GHz radio is off. The 5GHz MT76 AC radio is in the default setup which is bridged to LAN.
The network looks like this: C50 AP LAN - router with 1gbps switch and 1gbps Internet connection

I'm testing with intel 7265 on Linux. A different ac AP never goes below 200 mbps. This mt76 based C50 never stays close to 100 mbps ethernet speed.

I've created FS#230 because I see some other problems, not just this performance related one.
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=174#comment671