Corona 12 feels sluggish?

[ProxyFuel]

Is anyone else noticing that the latest version of Corona 12 feels slower compared to previous versions? I've been using the same test scenes for years, running them on different machines with consistent software setups but varying hardware, and I've observed a significant drop in speed. Even my students have been complaining that it feels sluggish. Is anyone else experiencing this? I'm running Corona 12 with 3ds Max 2025 on Windows 11

[maru]

Hi, could you please share any scene with us where you are able to consistently reproduce this? (even if it's a simple test scene)
The thing is that we have received multiple reports like this, but we are unable to reproduce the problem so far. Once we have a scene, we could render it on various systems with various Corona versions and share the results with you.

The best way to share scenes with us is starting a support ticket here and attaching your scene archived with all assets (File > Archive option in 3ds Max):
https://support.chaos.com/hc/en-us/requests/new

Thank you in advance!