Hi, I found Corona 10 to be very laggy and slow on different facets of the engine. I’ve opened an old scene that rendered in 1h15m in C9. With C10 it is almost two hours. Quite unacceptable if you ask me. Also the IR is buggy. Hangs when making changes to lights etc, and when trying to stop the eng…

Scenes are always welcome, they can be attached to a ticket Chaos - also do let us know your hardware configuration too, in particular CPU plus RAM configuration. We are looking in to some similar reports too, so the more scenes and data we get, the better we can see what might be happening. Thanks! …

Hi Tom, thanks! I’ve made a ticket and uploaded the scene. As I do a lot of bottles with heavy use of caustics, maybe the new caustics solver has to do something with it? When I want to revert to Corona 9, can I simply grab that installer or do I need to remove Corona 10 from the system first? TN…

Personally I’d suggest setting things up so you can use a multiloader, see Corona for 3ds Max You could then either Leave 10 as the default when you run Max, with a little icon for the script that starts Max with 9 as the exception, or Remove 10, install 9 as default when you run Max, then add 10…

Hi Guys I’ve been running 10 for the past 10 days and i had the same feeling of renderings being slower. This morning i replace 10 by 9 and re rendere my scene. With 10 its really slower then with 9. 1 hour 50mn with 10 vs 40 mn with 9. Configuration :C4D/CRN Windows. AMD Ryzen Thread Ripper 3990X…

[image] Atypik: Hi Guys I’ve been running 10 for the past 10 days and i had the same feeling of renderings being slower. This morning i replace 10 by 9 and re rendere my scene. With 10 its really slower then with 9. 1 hour 50mn with 10 vs 40 mn with 9. Configuration :C4D/CRN Windows. AMD Ryzen…

Hi. I’m using window 10 last update. I can’t share the scene now becaus it’s under disclosure. But since sunday, i’ve done a lot of other renders andt it’s the same. Faster with 9. Around 2 or 3 times.

[image] TomG: Personally I’d suggest setting things up so you can use a multiloader, see Corona for 3ds Max You could then either Leave 10 as the default when you run Max, with a little icon for the script that starts Max with 9 as the exception, or Remove 10, install 9 as default when you ru…

Is there any news about this? I think there is an issue with the triplanar / mapping randomizer (either one or in combo) which takes a lot of computing power. I also saw similar reports in the max forum.

There is a fix for the triplanar slowdown being tested in the Max daily build right now, with the aim to have this hotfixed in Corona 10 for Max and C4D soon (along with C4D 2024 compatibility, for the C4D hotfix).

Corona 10 Very Slow

Corona Corona for Cinema 4D Corona for C4D :: Issues

romullus October 13, 2023, 12:26pm 15

A hotfix for triplanar slowdown is out for quite some time. https://forum.corona-renderer.com/ Corona 10 (Hotfix 2) released for Cinema 4D and 3ds Max

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Corona 10 Very Slow

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