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Messages - Sepia21

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1
I repeated the test on three PCs, and the results are as follows:

PC 1: Equipped with an RTX 2070 Super, running Corona 12 HF1 on Max 2025.3.
Opened Scene: Consumed 1.4 GB of VRAM.
Interactive Rendering: No change in VRAM consumption.

PC 2: Equipped with an RTX 3070, running Corona 12 Update 1 on Max 2025.3.
Opened Scene: Consumed 6.1 GB of VRAM.
Interactive Rendering: Increased VRAM usage to 6.5 GB.
After Stopping Interactive: VRAM usage rose further to 7.2 GB.

PC 3: Equipped with an RTX 3090, running Corona 12 Update 1 on Max 2025.3.
Opened Scene: Consumed 4.6 GB of VRAM.
Interactive Rendering: Reduced VRAM usage to 4.1 GB.
After Stopping Interactive: VRAM usage decreased further to 3.4 GB.

All PCs are running the same version of Windows 11 (24H2).

Regarding tests with Max 2024:
Unfortunately, I have Max 2024 installed only on PC 3 (RTX 3090), so I cannot replicate the test across all PCs. However, I noticed that Max 2024 consumes less VRAM compared to Max 2025. Running the same test on Max 2024 with the latest version and Corona 12 Update 1 resulted in:
Opened Scene: Consumed 2.4 GB of VRAM.
Interactive Rendering: No change in VRAM consumption during or after stopping interactive rendering.



2
I did a test with a scene on my work PC (with an RTX 3070) and my home PC (with an RTX 3090). On the work PC, the Vram usage is 7.5 GB out of 8 GB and I will encounter a lot of slowdowns during interactive renders or even in material editor for a few seconds. On the home PC, the VRAM usage is 4.6 GB out of 24 GB and I don't encounter slowdowns. Both are on the latest version of 3ds Max and are using Corona's latest release. No other program is running in the background. I don't recall having issues like this using any of the previous versions of Corona and even on my home PC, 4.6 GB of VRAM usage for a scene that simple is a bit much. I will try to test the same scene on another PC running an older version of the Corona with an RTX 2070 Super and will report back.

3
I have a really simple scene with basic materials (no textures used, only Corona basic materials), and my VRAM is almost full (7.4 GB out of a total of 8 GB is used). Even with this scene, using interactive is problematic and laggy. I have an RTX 3070, and my CPU is a Core i9 13900 with 64GB of RAM.
I never had this issue with previous Corona versions, even in much heavier files.

What Max version, just out of curiosity?

I'm using max 2025.3, the most recent update

4
I have a really simple scene with basic materials (no textures used, only Corona basic materials), and my VRAM is almost full (7.4 GB out of a total of 8 GB is used). Even with this scene, using interactive is problematic and laggy. I have an RTX 3070, and my CPU is a Core i9 13900 with 64GB of RAM.
I never had this issue with previous Corona versions, even in much heavier files.

5
I am experiencing the same slowdowns with the most recent update (Corona 12 Update 1).

6
Is there a reason that every time I use interactive, I have to check the denoising option in the follow-up render? Sometimes I forget to activate denoising, and I save the render and move on to the next view, only to come back later and see my render is noisy. I have to re-render it since the denoising option was deactivated after using interactive.

7
I also have encountered this issue multiple times, everything is working normally but suddenly when I start interactive, it uses all the RAM, and Max crashes. I have to remember to save before starting the interactive every time.

8
Hi, sorry if this is the wrong topic. I'm trying out the Corona to vantage feature, I have noticed that I have to reload my hdri in vantage, but this is not a big deal, however, the biggest issue that I have is that for some objects, it seems that uvw map is lost when the scene is transferred to vantage, and also it seems that there is no way to scale a texture in vantage. Am I missing something?

9
When the render regions function is activated and the selected region starts from the edges of the image, we lose the option to resize the region from the edges of the image, only moving the region is possible. When this happens, the only option to resize the region is to move away the region from the edges of the image, then the option to resize the region reappears. On Corona 11 we could resize the region no matter which part of the image was in region mode.

10
Hi everyone,

I've been testing Corona 12 for the past few days, and have one request, is it possible to have the Corona smiling face emoji back? It was really helpful to understand when we are rendering. Now every time I have to check if the interactive render is running or not.

Thanks in advance

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