A very,very long time ago, I googled why my Crusader Kings II game was unbearably slow. I found a few things to help me and I applied them, but there was this really effective one. I found it on a Steam forum. The user said to open cmd and type something. Problem is, I can't find this forum thread anymore, and I've forgotten the command. I think it was something to let my RAM or whatever (I really don't know anything about laptops and computers) be used to its best (like what it can do best). I hope that what I just said was understandable. What I remembered, also, is that it required me to do a restart. That's really all I remember. It had a very remarkable effect on my gameplay. I've already set this game as real-time priority in task manager for windows, its still too slow. lol.
Better to ask this in a more....technically sound forum. While nuf has computer guys,this CMD command probably needs admin permission and stuff like that. Better not to mess around.
A dedicated gaming forum would probably serve him better. I know a few cmd hacks, but I'm not gamer, so I can't help... ¯\_(ツ)_/¯
try searching for the following keywords in google: cmd ram optimizer Then try one of the articles. I'm not sure if it'll work though.