Chaos Corona Forum

Chaos Corona for Cinema 4D => [C4D] I need help! => Topic started by: pixelgaertner on 2019-08-27, 15:01:55

Title: Material preview window
Post by: pixelgaertner on 2019-08-27, 15:01:55

Hey there,

We have a constant Problem:

The Material Preview is very slow, getting worst when you go and "open window" to have
a bether View.

Any ideas??

Corona Version 3 hotfix 1
Cinema 4d R20

Title: Re: Material preview window
Post by: 3dkobi on 2019-08-28, 06:10:50

I think you should update to Corona 4 hotfix 1. Corona 3 is an old installer

Title: Re: Material preview window
Post by: Beanzvision on 2019-08-28, 09:58:51

What resolution is your material preview set to?

Title: Re: Material preview window
Post by: pixelgaertner on 2019-08-28, 10:25:38

sorry my fault. of course we are using corona version 4

window size dosent have a rela influence. (but it should, i know)

Title: Re: Material preview window
Post by: Beanzvision on 2019-08-28, 11:01:16

Is this for all materials or just certain one's that might use special effects such as displacement or SSS for example?

Title: Re: Material preview window
Post by: pixelgaertner on 2019-08-28, 13:59:46

Quote from: beanzvision on 2019-08-28, 11:01:16

Is this for all materials or just certain one's that might use special effects such as displacement or SSS for example?

thats the strange thing. its basically with all materials.

no one else dealing with such a problem?

i tried to find some information about Preferences/memory, but couldnt find anything

Title: Re: Material preview window
Post by: Cinemike on 2019-08-28, 15:58:50

When I open a texture preview window, it takes up to 10 seconds to refresh this window after some changes with the preset quality of 3, but that's probably due to my old CPU (an i7-4770).
Changes with "expensive effects" like SSS take a lot longer, even with preview quality set to 0 and a texture window open, but again I blame it on my CPU.

Title: Re: Material preview window
Post by: burnin on 2019-09-01, 16:32:17

another friendly note ;)

it's also maxon's way of automating all possible things - all previews in all windows get updated (even icons/thumbnails) so have at least windows open and as small as possible (btw, it doesn't matter, if you don't see it, it still takes resources in the back)

Title: Re: Material preview window
Post by: pixelgaertner on 2019-09-03, 11:45:44

turning the preview quality down to 2-3 helped a little bit.
compared to 3ds max it seems to be much more slower is far as i can say.

i will contact maxon because thats not the only performance problem we are dealing with.

i keep you updated.

thanks everyone

Title: Re: Material preview window
Post by: brankonovakovic on 2019-09-03, 12:50:46

I think that is problem with C4D, because sometimes C4D is doing this with materials, how many materials you have in scene ? Spec of you PC? Material preview level? How many is heavy your texture ?

Title: Re: Material preview window
Post by: Nejc Kilar on 2019-09-03, 13:13:39

Heh, I actually have the material preview quality set to 0.1 otherwise things get unusable with 72 threads and the IR being on. Not that setting it to 0.1 resolves the issues but at least its somewhat borderline manageable.

I'm wondering, is this happening to you with the IR running or even without the IR?