[FS#896] mt7620 - dropping frames (WiFi)

[LEDE Bugs]

The following task has a new comment added:

FS#896 - mt7620 - dropping frames (WiFi)
User who did this - A (drut)

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@daiaji: it seems like different bug for me - full tx queue vs queue failed to flush
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=896#comment4346