When I'm drawing my work, the photoshop 2015 suddenly does not respet setings and it makes a straight line when I have been drawing curves. the issue stays there meanwhile I push lots of keys on my keyboard to aboid the issue. This issue happens continuously while trying to draw curve lines or erase something, it does the same issue. Also the selection is afected, because when I try to select it does exactly the same issue as I intend drawing curve lines while working, to try to select something puts a straight instead of being able to choose what I'm trying to point. Also the issue appears when I switch to a broseur to see something, then the vejaibor of setings got afected. It ́s anoying. Is it possible to have some help to fix this problem please?