Few ppl here already reported this few releases ago and the bug lives on..
Very simple, on the macbook settings has an option to save battery called “Low power mode”
If you’re not on low power mode the render speed drops to 600-750% (processors power), when you switch it on to Low power mode the processor’s cores go full blast up to 900% ish speed.
It wouldn’t be a big deal if I didn’t have to use other apps that are very affected by the low power mode turned on
tested on lots of differente scenes,
it’s not a Heat problem
I’m on Macbook pro 16 m1
tried on Cinema 4d r25,26 and 2023 latest version
Corona 9 final release
mmm…I tried several time to found a solution to use more than 800% or more of the CPU during rending on my MBpro M1 Max. I continue to have around that percentage.
There are some Corona Render problems on M1 processors. I have Intel processor iMac too here and the percentage during rendering go up to 990%…
I will give to your tips a try…
If you try the Cinema4D internal rendering engine you will able to use all percentage of the processor…but not with corona render…
I tried your tips…I switched to low power mode during rendering and this is the test. On signed area Ive switched OFF low power mode and Corona render slow down the process up do 750%…
Absolutely strange behaviour…I think that developer needs to found a solution on M1 processors…
did you try with interna cinema4D engine? here is a comparison with a standard Cinema4D scene…the settings doesn’t affects the rendering speed that still uniform…I think Corona developers have a lot to do with M1 processor…we lost around 20 or 30% of the power on the trash…
Very disappointed..
Alex
that’s exacly what the problem is, I also tried differente engines and only on corona has this issue. It has been like this for few releases already, we did report and some other post but never got looked at.
Can the Devs comment on this please? Would be good to know that if we are spending a tonne of cash on an Ultra Studio or whatever comes next that we are going to get all the juice out of it? (or even my current M1Max)
Maybe something is going wrong with Cinema4D with or without corona render.
Take a look into this video and watch what happen to Cinema4D memory…I got many crash on Corona Render during day too…but maybe Cinema4D help Corona to crash…(watch it on YouTube so you can enlarge the video)
This is the replay from Maxon’s Support:
Thank you for reaching out and sorry for the issue you experienced.
I was able to reproduce the issue here to.
There’s been a bug filed for the behavior you’ve described. I’ve aggregated all of your comments and information alongside the bug report to our Engineering team, who will continue to dig into the issue and prioritize it for a fix.
The timeline for a fix will vary depending on the impact (how many customers are affected) and severity (how bad is the bug) as well as the status of new feature work. As such, I cannot provide a time estimate as to when it’ll be fixed.
I am very sorry, but currently I have no solution for you to prevent it.
As we are able to reproduce this from Cinema 4D 2023 down to S24, we think this is an issue with the macOS Graphics Driver.
We have to clarifiy this with Apple first.
Just out of interest, is this setting for ‘On battery’ or ‘On power adapter’? I have my macbook charger plugged in all the time 24/7 so have battery set to automatic and power adapter to ‘high power’.. Should I be setting both to low for rendering?
You can leave settings to “automatic”…usually this settings is for optimising the energy saving. If you leave all to automatic you will get the best performance during the rendering. Most of this settings is for the GPU. We don’t know why Corona change the rendering speed based on these settings…
M1 doesn’t have the automatic setting, it’s either on or off and that’s the most annoying part having to switch on and off depending on what software you’re using.
Hello? Any dev around? at least to say something about it?
We have one more release and no ANSWER OR MENTIONS about this issue, the real question here is why the corona team is totally avoiding this problem? We’re are paying just like everybody else and being totally excluded.
Sorry for the delay. I can assure you that we are looking into this. We don’t want to share any updates before we have some specific results and explanations from the dev team.
Hi all,
After reviewing the issue, our dev team found that it is actually a CPU issue (thermal throttling).
I mean, you’d think that if you set your power preset to “High” you should then get all the power from the CPU, this idea is correct; however, Corona exhausts the CPU way more than the OS or CPU is expecting, so the automatic response from the CPU is to reduce the overall performance.
This is happening mostly on laptops (Macbooks) due to the inefficiency of their cooling system.
This shouldn’t be happening when using a desktop computer (including Mac minis), as they have a more efficient cooling solution than Macbooks.
You can monitor the CPU temperature and the overall performance of the CPU by using either the built-in “Activity Monitor” app, or using the “TG Pro” app, or using the “iStatistica Pro for Mac” app.
I hope this helps.
Sorry but I don’t think so, and your Dev Team may doesn’t know How Apple silicon CPU works… If you monitoring the overall performance during Cinema4D Internal Rendering Engine the CPU stay around 980% for all the time (see attachment), and no action is needed from the preference panel where battery settings are, you also can hear fun running very quietly. Only with Corona Render we got performance issue and wrong CPU usage. Is not a thermal issue…this low CPU usage appears on second or third rendering start…or after the five pass…
Why does Corona slow down to 780% and Cinema4D Rendering Engine still on 980% of CPU using? Why does Cinema4D is not Thermal affected? Because Corona doesn’t run correctly on M1 device…is very simple…
Take a look to these screenshots…Tell to your Dev Team that Corona Render must be compiled correctly for M1 devices…is not a Apple Silicon throttle issue…I think that with this kind of CPU your Dev Team need to investigate more deeply on the Code.
so…does is difficult for Devs to run a Cinema4D rendering engine scene and monitoring the CPU usage?
We did report this long time ago and they came up with same explanation blaming Thermal throttle then and now, All we need is the true explanation about it, I don’t know why they’re dragging this for so long! NONE of the devs come with a real answear on when will actually look at it.
What I see is that the dev team does not have a macbook machine to teste at, they probably have an mac mini m1 and that’s all they call for.
