2000$ only 30 fps on CS:GO???

Hello, so recently, about 1-2 months ago, I got a new laptop. It cost me 2000$ for it.. When I first got it, I thought that it would be able to run very good, and very smooth with most games, and especially csgo, cause my old Intel laptop, ran CSS 100+ frames, and that was very shite..

It's a decent laptop:
I7-6700HQ
16GB RAM
GTX 960M 4GB..

I try to play CSGO on medium/high settings, and i get around 30 fps... And even then, at longer range It's hard to spot players, and the movement feels very laggy. and just bad.. and it ruins my aim.. I can hardly hit someone, long away from me.

Any solutions? Maybe I'm doing something wrong?
Even at all low settings I would only get 60 fps..
Or does cs:go, actually need good graphics? :O

And, what's the best settings? (good performance, but also being able to spot people easier?)

And what DPI do you use?
THANKS A LOT!