A:Answerif it lags, that's probably your computer having a low refresh rate on the screen. if the stylus tracks on it, it works as intended. it is an active stylus which mean s it sends out electronic signals to the screen to track it, so your computer accepting it means its a laptop issue.
A:Answerit is an active stylus which means it sends electronic signals to the device to track location of the stylus on the screen. that means that unless the a8 has wacom aes or microsoft pen protocol, it will not work
