I played last time and got super low fps like 25 online

any ways

Operating System: Windows 7 Home Premium 64-bit (6.1, Build 7601)
Processor: AMD Athlon(tm) II X2 245 Processor (2 CPUs), ~2.9GHz
Memory: 8192MB RAM
Card name: NVIDIA GeForce GT 545
Display Memory: 4048 MB

so i was wondering if i should download it again and try it. but i want to make sure my pc can run it