MacBook Pro 2011 Question

Alright, figured I’d see what my options are before throwing this thing out the window.

I have a 2011 Macbook Pro (specs in link below). The freezing and constant stalling has become borderline unbearable and I’m considering dumping some money into upping the RAM to 16gb since it’s been shown to work.

Now, I don’t game much on PC, but I would like to play Halo Combat Evolved or Custom Edition with parrells running XP. Do you think this thing would allow it? Or would you just say screw the RAM and get something more up to date?

Will probably get another laptop or desktop soon, but would like to hold off on that until after grad school…

https://support.apple.com/kb/SP645?locale=en_US