Another thing to remember is, the LP-64 EQ is a mastering EQ.
It's not designed to be used during the tracking stage.
I don't think any of the VST's in that 64 series were meant to be used during tracking.
I think either something changed with this particular VST, or something changed with PDC in general in the X2 'A-patch'. I noticed that I can't use any of the read ahead VST's at a lower buffer setting since installing the A-patch. It's not a big deal because I don't use them for tracking and I don't mind raising my sound card buffers, but I did notice that I could no longer have my sound card set to 128 when the LP-64 EQ was in a project, I have to raise it to at least 512 ... sometimes more depending on the size of the project, otherwise I get pops/clicks/dropouts that I didn't get prior to installing the A-patch. No big deal ... just an observation.