[FS#487] VGV7510KW22 / o2 Box 6431 / RT3062F: Very poor Wi-Fi performance

[LEDE Bugs]

The following task has a new comment added:

FS#487 - VGV7510KW22 / o2 Box 6431 / RT3062F: Very poor Wi-Fi performance
User who did this - bugreporter (bugreporter)

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Yes, does not make a difference.
After all, I originally noticed this problem because Wi-Fi would occasionally become even too slow for my already humble Internet connection.

I have further played around with settings and older firmware blobs, and checked the mtd partitioning, all to no avail.
The only other peculiarity I have noticed is that the kernel apparently recognizes the RT3062F chip as a RT3572:
[   10.902947] ieee80211 phy0: rt2x00_set_rt: Info - RT chipset 3572, rev 0223 detected
[   10.910726] ieee80211 phy0: rt2x00_set_rf: Info - RF chipset 0008 detected
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=487#comment1734