Z-Brush acting slow despite optimization?

#1

Hello everyone! Im starting to notice some lag in z-brush and i don’t know what causes it.

I have a 3.30 ghz processor and 8gb ram but it still lags at around 470 000 polys. From what i gather it should not even lag at 5- 10 millions of polygons if you have 64 bit system and multi quad processor but i guess i could be wrong?

Iv’e given z brush the max amount of memory at the compact mem settings and iv’e also done the multithread performance optimization with minor improvement.

Do you know of something iv’e missed?

Cheers!

//Playgu

#2

That is strange. Even on a 5-yo system ZB should run great up to a few million due to it’s excellent memory optimisation.

Are you running 4R7 64-bit? As this is the first version(beta) of ZB that is 64-bit.

Have you tried with different .ztl/meshes/.obj? Maybe a reinstall?

#3

Hello Musashidan! Thank you for your quick reply. Im running Z-brush 4-R7 64-bit. The project im working on is a “standard” mesh from z-brush that iv’e altered in maya and then imported back again to z-brush.

Worth noting is that when i bring the updated mesh back into maya it becomes very large?

Iv’e tried reinstalling the program to no effect :confused:

Thanks again for your response!

// Playgu

#4

How does the 32 bit version perform? Does it suffer the same performance problems?

#5

Hello AJ, Yes the “standard” version of Z-brush performs the same, if a little slower. There is this little delay to every brush stroke :/.

#6

Are you using a tablet? Does it still lag if you use the mouse?

#7

Im using my mouse, I have not tried with my tablet yet.

#8

Damn. I was hoping it might be one of the tablet pc settings interfering. I think you’ll need to get in touch with Pixologic about this one.

#9

Ah okey, damn…

Thanks anyway though! I hope there is a solution :/.

#10

I just thought of something. Make sure you havn’t accidentally enabled ‘dynamic subdivision’, as this will make ZB brush engine lag if activated on a high-poly mesh.

#11

Ah good tip! The problem actually dissapeared by itself kind of, but i deactivated dynamic subdivision anyway. Thanks!

I have another problem right now where z brush reverts to an older version of the sculpt randomly for some reason. It’s not that i click on the history “tabs” either, the problem occurs on a much never version of the sculpt than the one loaded.

Any idea about this one? :confused:

#12

Are you saving your work as a ztool or a zproject? Could be something to do with saving the undo buffer along with the project. I havn’t experienced that myself, but ZB does have several weird bugs. Are you running the latest version: patch 3?

#13

Im saving my work as a Z-Project, i also have it saved as a Z-tool but i found it better to save it as a project as it saves my view and selection etc as well. But then i get theese wierd errors like this one: Wierd Mesh

I was doing fingernails on a hand i was sculpting and suddenly it reverted to an older version of the hands were the fingers were a bit longer but as you can see the nails remained on the fingers.

Im running z brush 4r7.

#14

Could you have inadvertently stored/switched between morph targets?

I realise you’re using R7 but have you updated to the latest patch, P3?

#15

Make sure your computer system is 100% working properly, meaning, ensure your video drivers are all installed, update your bios, defrag your hard drives etc, then if the problem persists, I’d recommend a clean install of Zbrush and ensure that the hdd it’s installed on has plenty of additional space.