I’ve got a fairly simple animation to render, and the frame times seem a bit long for what I’m doing. I’m not rendering the character on a separate layer since I want the GI/shadowing interaction from the environment.
I’m using a mid/animation irrad/brute force, 8core 8gb, vray standalone via qube, (if anyone needs the qube vray standalone python simpldcmd let me know) 1280x720. Displacement is broken at the moment, and it’s averaging 45 mins per frame no motion blur!
Also, I need to kill the SS2 flicker, and I’m not sure how.
That render time is way too long for this scene. I can’t really say what’s wrong with it right away though - it would be best if you can get us some example to vraymaya@chaosgroup.com so that we can make some suggestions.
Uploaded a scene for your review. I think the DMC threshold was set very low, I’m experimenting with locking the threshold to the depth of 3. This has taken the frame time down to about 30 mins. I also turned down the Max Subdivision divisions to 3.
I’d be very receptive to any optimizations you can suggest.
I can’t kill the SSS2 Flicker. I increased the prepass to +1, which added 10 minutes to the frame time, but it’s still there. The compression on Vimeo makes it hard to see, and you can only see it full frame, but uncompressed, it’s pretty terrible.
you’ll probably have to modify your dmc settings, but have you tried brute force primary with light cache secondary? we haven’t found any other combination (besides saving a per-frame irrad map prepass) that will dependably remove sss flicker.
I think you are right. I turned the irrmap way up and it was still there.
On those first tests I posted, it wasn’t that high. I was getting acceptable noise with Medium Animation irrmap and Adaptive Dmc subdivisions of about 4. Are you saying I should I increase the DMC subdivs to 8 or 12 or more?
Bingo, I would try something like min:2, max:8, and if you’re using the noise threshold, you might need to lower that to compensate (adding rendertime) If your noise threshold is already low, keep it locked to the noise threshold. If your noise threshold is large (0.07 or so) I’d use a clr threshold of like 0.03.
How does it look with the universal settings? (It’s a sticky on the forum), takes a long time to render, but works for about everything and looks amazing.
ps. If you want to try the Brute force solution, brute force should be primary and secondary should be LC
Support got back to me on the slowness… was caused by a singleShadingSwitch. I took out the switch and just created 3 shaders with linked attrs, 4x faster. I’m still working on the flickering.
These are the settings I think I was using for the 4.5hr frames. Still seems a bit long for 720p at /4 at 1 hour.
