10.1.1 didn't fix the 6031 error when I use 3rd party plugins

[kinghand]

If I just play with 3rd party plugins, everything is OK, but if I press and hold a knob of the plugin and adjust them, after 3~10 seconds, the 6031 will come. Only 3rd party plugins make such error, Channle Strip and other plugins directly from Avid don't make this happen or happen rarely. I'm using MDW EQ, MCDSP 6030 and Brainworx Hybird EQ and so on. If I raise the buffer to 2048 samples, it will be better. but there's so much delay under 2048 samples buffer that I can't tracking at all.