Question Brand New Lenovo y50 GTX 960m SLOW

I just purchased a new Lenovo Laptop and it is running slow. I am still within my 30day return policy and if I can't figure out what the problem is I will be sending it back.
When I load a webpage and try to scroll through it, it will stop, stick, glitch and even time out.
I have updated the Nvidia driver for the gtx 960m, it is running Windows 10. Even now while I type this the letters on the screen sometimes freeze and i have typed 2 words before it shows up on screen.

Here is the Lenovo Y50 I got. http://shop.lenovo.com/us/en/laptops/lenovo/y-series/y50/?sb=:000001C9:0001434E:

I am interested in it because it has a powerful gpu, big hdd, good amount of ram, and thin and light.

However, I am not pleased so far with its performance as far as basic web pages are concerned.
I know it chooses between 2 gpu's the onboard and the Nvidia and I am not sure if that has anything to do with its performance. I would not mind running the gtx constantly if that would solve my issues.

If I can't fix it, what laptop should I get instead? I was looking at the HP Omen (basically same specs but more expensive.) Or a Sager.

I want it to have a decent looking design, and thin.

Thanks for your time