Lagging and Freezing in Island Paradise

[Miu]

I have strong lagging and freezing only when I'm playing Island Paradise or the Seasons (I don't like vampire dying in sun, so I gave it to my friend. I think it's pretty strange, because I haven't improved the quality.

My GPU information:
AMD Radeon HD R6790
Memory Type GDDR5
Bus Width 256bit
Memory size 1024MB
GPU Clock 840MHz

My CPU is AMD Phenom II X4 955

My RAM is DDR5 8G

I consider them higher than the requirements. Why is it so lagging?