Vostro 270s, Jogo 2d, upgrades

Good evening,

Game Tibia, a relatively light 2d game, and I've been facing problems with my fps. Generally, I play with 25-35 fps, but when there is a lot of information on the screen it even drops to 10 or even less. I would like to play with 60 fps. Initially, what would be most needed to increase my performance? Put more memory, for a video card, put a ssd or change the processor? And what hardware are compatible? Requirements of the game:

Minimum:

• OS: Windows 7
• Visual C ++ Redistributable for Visual Studio 2015
• Processor: 1.5 GHz Pentium 4 or equivalent with SSE2 instruction set support
• Memory: 1GB RAM
• Graphics: 128MB; if DirectX 9c or OpenGL 2.1 are not supported, only software renderer is available (no light effects)
• Hard Drive: min. 150 MB

Recommended:

• OS: System: Windows 7 or newer
• Visual C ++ Redistributable for Visual Studio 2015
• Processor: 2.5 GHz Intel Core i3 processor or equivalent
• Memory: 4GB RAM
• Graphics: 512MB; OpenGL 2.1 support
• Hard Drive: min. 150 MB

Thank you,

Ligia.