PC FB Era doesn't lag if you have good connection, my Android on the other hand is terrible.
Amazing Ace HQ: http://amazingace.wix.com/priority
Amazing Ace HQ: http://amazingace.wix.com/priority
Amazing Ace HQ: http://amazingace.wix.com/priority
I don't lag unless my Internet is pooping out, my frames are good till there is a lot of people on my screen, I do get occasional screen freezes though, but to fix it I just uninstall and reinstall (make sure you are identified first) for ios, for android you just clear the data. This helps me might help others with the occasional freezing of the screen.
i've got so much lag spikes that i just go with the flow now