[FS#929] mt7620 abysmal wifi performance

[LEDE Bugs]

The following task has a new comment added:

FS#929 - mt7620 abysmal wifi performance
User who did this - pmgp (mgondium)

----------
Your second image reached ~55 Mbps and remained stable.
17.01.1 got to ~70 today but becomes unstable with multiple clients. Besides the speed, those branches are not a working solution.
Trunk now reaches 50 Mbps but also stalls with multiple clients.
----------

More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=929#comment3173