5GHz WiFi - Poor Performance in 10.11.6

[blufrog]

Hi,

For reasons unknown I get poor performance when using 5GHz WiFi. Pings to other computers and the router are in the order of seconds. Operation on 2.4 GHz is fine. Does anyone else have this problem?

 

[blufrog]

I have just experienced the same problem on 2.4 GHz, so that kills that theory.

Is no-one else experiencing slow WiFi/high pings to LAN clients?

 

[cynics]

I experienced something a little similar. SMC reset fixed it though. Try that is my first (only) suggestion.

 

[Dreadnought]

I have just experienced the same problem on 2.4 GHz, so that kills that theory.

Is no-one else experiencing slow WiFi/high pings to LAN clients?

Same here, both the 2.4 and 5 ghz. It seems to help to disable the energysaver settings of the harddisc sleep mode, resetting the PR ram and unplugging the powercord for a while. Tried the SMC reset, but that didn't work, my iMac wouldn't let me. Also move your iMac a couple of inches forward or to the left or right on your desk, and for some magic reason it found the wifi network again...