Is there a solution to the slow turn problem on the analog sticks?

I bought a controller 11 months ago and in the past days this thing is annoying the shit out of me. Whenever I try to look to the left (with the right stick), the camera moves very slowly and I have to put some pressure on it to make it move as fast as when I look to the right side. I googled it yesterday and just found someone saying to reset the dualshock, which I did and didn't work. Could someone help me please?