In attempting to get an adequate PING for my NEST devices (>4000ms for 2.4g, >2700ms for 5g), I reviewed the router settings and poked my nose into the system logs and found the following, any ideas?
kern.warn kernel: [399219.670000] [wifi1] FWLOG:  WAL_DBGID_TX_BA_SETUP ( 0x436104, 0x6, 0x60, 0x10040, 0x9465ca8b )
Looks like something with the router WiFi driver/software. Are you using the HT2000W WiFi? Above my knowledge level, perhaps one of the mods will reply or @C0RR0SIVE can help.
I see warnings similar to that in mine, though I'm not having any issues.