SEES HIGH END...
*Checks cpu*
*says Yup, HI END, like totally.*
Yea like Antonis said, your cpu is bottlenecking your gpu.
OR it may be because of your drivers. OR you could search some stuff on google so you may get better performence.
So I am installing Windows using USB and deleting Ubuntu. When in the process of installing Windows, I accidentally deleted ALL of the partitions. When I restarted, My pc took me to a place where I had to type commands. I think it was called GRUB rescue. Can someone Help?