Hi,
Adjusting Viewport Preview size past 512 pix makes my whole scene start to lag. I usually have materials with previews of 2000pix or so, Im unable to work at that resolution.
Also, When trying to render by setting C4D native IRR and then rendering only render region that is copied from IRR, after render is stopped cinema freezes and crashes, this bug is present since 5 version.
Thank you!