I mean, FX-4130, along w/ FX-x1xx/x2xx CPUs which based on bulldozer architecture, is considered to be a setback of AMD because such CPUs performs quite bad in gaming because such architecture is insufficient and has low performance in gaming. That's why I recommend FX-4350/6300 CPUs instead because it repairs most of the problems of bulldozer architecture (they utilize pilediver instead) and improve 20-30% performance per clock. By using 32nm process they finally become successors of Phenom II CPUs (Bulldozer FX- 4/6 cores CPUs performs even worse than 4/6 cores Phenom II CPUs respectively).
Also maybe your RAM isn't enough too. Check the CPU and memory usage in gaming but I recommend changing your CPU to pilediver ones.