So lag fps so low

[benevolentChestnut]

:’( My computer Spec
Processor : AMD E2-3200 APU With Radeon™ HD Graphic 2.40 GHz
RAM : 6.00GB (5.49 GB usable
System Type : 64Bit
Is so lag low FPS T^T Help me plss
<3 I love to play Dirty bomb I need to play to fun T^T