No these are two separate issues:
- The original issue. 5ghz wifi shuts down completely meaning clients loose connection and can't find the network anymore. In Luci the interface is shown as inactive. This is what quarky's patch is supposed to solve. Mostly happens after several days of usage.
- The issue apparently introduced by quarky's patch. Wifi slows down, meaning pages barely load, videos stall or buffer a lot. This can happen after a few hours of usage and occurs much more frequently.