It actually is quite good yes it was meant for tablets, but it is perfect for laptops and desktops i've used it for a year and i'm not going back. Its a light weight operating system therefore i can dedicate my hardware to run my games other than the operating system.
but design over performance i choose performance it takes 98.5mb of my ram to run my operating system for windows 7 you have to have atleast 1 gig just to run it.
And yes my computer gets 400 fps on minecraft and it only cost about 650$ even tho I bought it for 250$ :3 and it runs every other game atlest 100 fps and over