OK,..so last night I opened up AP to mess around in it and the brush lag was gone for awhile. Makes no sense. Later, I went back in and the lag was back. Again,..no logic behind it but wanted to report it. I always have touch disabled on the laptop because basically I hate it. Thought it could have a bearing on this odd behavior with the AP brush lag but it does not. Even when I turn touch back on, the lag continues.