yoo, i think i have same problem, league client is super laggy, and also my computer is when i focus that window, but with dwm if i switch tab, wait 2 sec, and the pc works fine, the problem appears again when focusing that window, in game the client closes so when im in summoners rift i don't lag, maybe we have same problem, only you keep your client open during the game and since you use fxce (don't know much of linux maybe im wrong) the window is always focus slowing down your pc
yoo, i think i have same problem, league client is super laggy, and also my computer is when i focus that window, but with dwm if i switch tab, wait 2 sec, and the pc works fine, the problem appears again when focusing that window, in game the client closes so when im in summoners rift i don't lag, maybe we have same problem, only you keep your client open during the game and since you use fxce (don't know much of linux maybe im wrong) the window is always focus slowing down your pc