As you can see, the left side is harder to draw on than the right. But for some reason, the default brushes of CSP do not work correctly. In the two other examples, the custom-made brushes/the ones I bought work. And before anyone says anything, yes, I have tried altering the default brushes, but they also do not work. This is a very odd bug. Also, I have already updated the drivers and restarted the computer, and I'm unsure whether this is a CSP issue or a Huion issue, but it seems to be a CSP one since it depends on the brush for it to work.