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Zbrush on Mac - Multithreading Madness (Fan and temp going crazy)

ZBrush Usage Questions
#1

ZBrush on Mac - Multithreading Madness (Fan and temp going crazy)Hi
I have just bought ZBrush for Mac and every time I start it up my CPU temperature shoots to 99 degrees and the fans stay on constantly. I have a late 2013 Macbook pro with an i7 processor and 16GB memory. I did a search on Google and this apparently is a known issue. People have suggested turning off Multithreading in the Performance sub-menu under ‘Preferences’ and although this does seem to work in that I no longer get the issues when I turn off the ‘MultiDraw’, ‘Auto’ and ‘MultiThreaded IO’, they turn themselves back on again when I restart ZBrush.

I tried turning the options off and hitting ‘Store Config’ under the Config options but the only option that stays off is the ‘MultiThreaded IO’ option - I have to go and turn the other two off manually each time or my temperature and fan speeds shoot up.

Now on reading the threads Pixologic says its an Apple issue and Apple says its a Pixologix issue but no-matter who’s fault it is, surely Pixolocic can make the ‘Store Config’ option keep the other two multi-threading options stay off? It is so annoying having to turn these off each and every time I start ZBrush.

I’m new to this application so maybe someone has found another way of altering these preferences to solve this???

Thanks for any help on this.

#2

You can record a Macro of the changes in Preferences. See my post here on how to have a Macro run automatically every time you start ZBrush.

#3

thanks zber2,
I’ll have a go at this later but seems a bit of a roundabout way of doing this. Is there not a startup config file that you can manually update for every option available? Surely ZBrush needs to know what options to set on or off by default hen it starts and can’t believe they would have just hardcoded this information!!?

#4

I’ve just switched to Mac version 4r7 on a current model Imac5K and I’m just now finding out about this problem. Performance out of the box has been very poor and I’m a little annoyed that I have to go modifying settings to get minimal performance increases.

#5

I installed ZBrush 2018 on a fresh install of Mojave. The fan issue still exists big time. The issue goes away if I turn off Multidraw. However, store config still does not store the Multidraw setting. Has anyone figured out how to keep Multidraw off? Why is this still a persistent issue after all these years? Storing the Multidraw setting is a Pixologic issue, not an Apple issue.