Kid's current gaming pc is old XPS8300 i5-2400, plays Roblox, some steam games like People Playground etc. We've noticed some Roblox games the FPS will dip quite a bit in gameplay and wondered if it'd make enough of a difference to upgrade the ram to 16gb? Thing is all 4 slots are filled with 2gb so would have to get all four 4gb which might cost up to $50 depending on what deal I might find online. Or is the i5-2400 going to bottleneck any advantages of the ram, as well as it's on 40mb wifi.