Long render as not usual on the same scene

[severalseconds]

I have big problem.. I dont know what happend. Before my scene was rendeeing by 2-3 hours now almost each scene (even the same which before was rendering 3 hours) rendeeing by 12 hours. Anyone can help me?

[romullus]

Are you runing out of RAM?. Can you show screenshot of VFB with stats tab visible, also screenshot of task manager?

[severalseconds]

thanks for reply :)
for example this scene was rendering before around 3 hours
Apologise that stat manager is in my native language I hope that it will not be huge problem

[GeorgeK]

thanks for reply :)
for example this scene was rendering before around 3 hours
Apologise that stat manager is in my native language I hope that it will not be huge problem

Are you rendering on a laptop, have you checked your CPU temperatures after prolonged times of rendering?

[severalseconds]

yes it is rendering on laptop no I didnt checked CPU temperatures after prolonged times of rendering

[GeorgeK]

yes it is rendering on laptop no I didnt checked CPU temperatures after prolonged times of rendering

Thermal throttling is a real issue with most if not all laptops especially when put under heavy stress, but I can't know if that's exactly the case here.

Please feel free to upload a saved archive of your scene for us to investigate your issue further: https://corona-renderer.com/upload

[romullus]

Hmm, i don't see nothing unusual in the stats, but i noticed that your scene in old screenshot is set at 5,0% noise target and in the new one, it is set at 4,5% Not sure if that alone can explain estimated difference, but i think it would be better if you'd set noise target exactly the same and let it render until it's finished. Estimated time is not necessary very precise measurement, especially after few passes, when image is still very noisy. One more important thing - does your old image was rendered in the same version of Corona? Noise calculation between different versions can vary quite a lot and that may give you different estimates and rendering times.

[PROH]

There's also about 2,5 million more primitives in the latest file, so it's not the exact same file.

Set noisetarget to 5 (as romullus said), and hide the newly added objects, and then see what happens

Hope it helps