Since it sounds like you are using Windows, do you have Lazy Nezumi Pro installed? Now I am not sure if it will help with this or not. I've talked to Guillaume about jittery pen movement and Lazy Nezumi Pro, and I have a feeling he said it wouldn't help in that respect, but it is worth a try. I am of the opinion that no tablet is complete without LNP as well, and it keeps getting better. There is also the complication that with some operations LNP is more of a hindrance than a help. The Crop tool for instance, is impossible to use with LNP turned on.





Give it a try. You get 30 days trial, and it costs $35 to buy. I LOVE it, but my gut feeling is that it won't fix your problem.







Since this GPU related, have you tried using different GPU settings rather than turning it off completely? Set Drawing mode to Basic, or turn off use OpenCL. You need to restart Photoshop after each change for them to take effect.





It's a common problem — including it being especially bad with Liquify — and I have heard of people fixing it by rolling back the Wacom driver.





I also suspect that Wacom issues are often related to crosstalk with other pointer devices, like mice and touchpads. What are you using? Setpoint, for instance, I've heard of causing problems with Wacom devices. If you are using it and have a non setpoint mouse you can use, then try removing it.





What tablet are you using and is it wireless? Try using a cable. Do you have a cordless phone on the computer desk?





Is the problem consistent? If not can you correlate the problem to other factors?





Good luck, and let us know how you get on.

