Deactivate cycles' material preview?

Is it possible to turn off the material preview in cycles render?
I can’t use cycles render in the newest build because it completely slows down my computer when I’m doing the modelling stuff (don’t tell me to get a new one)
so, is there any way? like script or something?
so far I’m only using the 2.64…

sorry if it’s a ridiculous question, thanks anyway :slight_smile:

(edit) sorry for the wrong sub-forum, it’s supposed to be in Technical Support…

Yep perhaps this message goes to other sub forum, I’ll leave it to the moderators to decide.

If you say this material preview in the Material section of Properties window then you can minimize it and it won’t calculate. Also if you want to preview the 3D Viewport faster then use a “Render Border” to avoid going all the way up.

didn’t think about that before, thank you :slight_smile:

Just collapse the panel and it’ll stop calculating (using the arrow/triangle next to the title of the panel [“Preview”])