input lag

Hi. I'm using a win10 tablet and my main keyboard has Bluetooth interface. so here is a problem: when I play something like shooter or just input text, a mouse left button doesn`t do anything for an around 1-2 seconds after last button pressed. Like you pressed a "W" key and try to shoot by LMB...

So i sometimes FPS games and get this problem with it, in fact this problem is with any game i need to use "W" to move in. When i press W i move forward but when i let go it still makes me move forward for a short period of time, it depends on how long I press W. If i press it for a long time...