Apple tv is connected directly to the router with a cat6 patch cable
macbook air is on 5Ghz because on 2.4Gh i get 10mbps and on 5Ghz I get 92Mbps
also Im on a unique channel (153) since all of my neighbors on other channels (to avoid interference)
I have my hbo go on safari (only one tab opened)
no other programs are running in the background
Apple tv doesn't run any programs on the background either (not capable)
I get full signal strength on my mac (router and macbook air is 2m apart)
Still it lags !!!
I have the same setup and chrome cast works fine.. but i hate using chrome and I need my tv for work since the macbook air screen is small.
even typing on word via mirroring is annoying most of the time.