I can run TOR, but it's all on low settings and it's a bit choppy in larger areas. What do I mainly need to upgrade to increase performance? I'm not looking for anything outrageous, I don't care if I can't run it on full graphics, I just want to be able to run it smoothly, even if it's on the lowest settings. My current specs are: **Laptop** - Windows 7 64-bit OS Processor: AMD Turion II Dual-Core Mobile M520 2.33 GHz RAM: 6 gigs Graphics Card: AMD M880G w/ATI Mobility Radeon HD 4200 Thank you.