I received my Pocket Reform today and while setting it up the trackball has become extremely slow and when I roll the ball faster, it doesn’t move the cursor at all. It’s basically unusable right now as moving the cursor across the screen takes about 10 seconds.
I don’t think this is a cleaning issues since the device has only been in use for like 3h.
I know you mentioned cleaning, but I do find that tends to be the issue if mine (fullsized reform) does similar. It tends to be from things like a hair getting under the ball so sometimes just blowing on the ball can dislodge whatever happened below it.