Perfectly clear slow

[Zenettii]

I am noticing that if you enable anything that has the words 'perfectly clear' attached to it, the work flow of processing any raw files drastically slows down.
Perfectly clear (PC) appears to kill ASP3 ability to process an imagine, with PC options all turned off, you get instant feedback when moving sliders about, as you would expect. But as soon as you turn on any PC option there are now delays in the feedback to your slider movements, making the entire program unsuitable for mass editing images or dealing with clients photo's.

I've tried this with both OpenCL switched on and off, reset all the performance options for setting threads etc.
The machine I'm on is running the library imports on an SSD that has 1000Mb/s write and 1400Mb/s read, I7 processor, 32GB RAM and Geforce 980m graphics (openCL usage). I don't get such sluggish responses in other software on the market