try pulling the pen nib out and let it stay like that sitting on your desk or something for a couple of hours. also if you drag in osu! or press hard on the tablet on photoshop for example try cleaning the tablet surface a bit.
my tablet does this too. unfortunately it comes with age.
unless yours isn't old, or unless the nib of your pen is blunt and needs changing, i don't think there's much that can really be done.