Laptops are never good for playing games.
My friend has a acer 5553(I think) and it has
Quad core 2ghz
6gb ddr3 ram
512mb amd radeon
I have a
Core 2 duo 3.1ghz
4gb ddr2 ram
512 9400gt
I can play mafia 2 with 25+ FPS (Very Playable
But his mouse lags even on the main menu and when you do a benchmark it does 5 FPS (Not playable at all)
So if the laptop has good specs, it still might not be able to run games as well as a lower spec system
But to make your laptop faster do a: Disk defrag, disk cleanup, download auslogics or tuneup utilities and then install gamebooster, delete any programs you don't need and try lowering the settings too
Hope I Helped