I’ve noticed there is a significant lag after making a brush stroke with the new upgrade. The strokes themselves are smooth, but it seems as if the cursor can’t keep up, like it takes a while to save the stroke. I’ve also noticed the lag happens at the same time that that background image is redrawn after a stroke. Has anyone else noticed this? Any fixes?
I’ve noticed a slight lag too…
I think maybe the new update is more taxing on older systems. My comp is an old core 2 duo 2.13 qhz overclocked to 3, with 4 gb ram. What are your specs Benek?
I just installed it on a much faster machine and there is still some lag, it’s slightly better though. It’s still a problem with doing fast brush strokes. Zbrush just can’t keep up anymore. 
I’ve noticed lag specifically with the Move Elastic brush, compared to Z4R2. Unfortunately I had to uninstall Z4R2 to install Z4R2b (because of the license restriction) so I can’t compare side-by-side, but it’s definitely slower. Load the default PolySphere ztool, subdivide once, then try pulling the sphere around with Move Elastic: it’s very, very slow for me. Lowering the Elasticity Strength to 10 or so makes it more responsive like it used to be, but then it’s not as effective…
the Elastic brush for me is unusable on anything but a low poly mesh. It so bad it hangs my machine. Anyone figure this out? This only started happening with zb4r2b.
I’ve encountered the same problem with my machine. I’m trying to do some polypaint, but it has become impossible because the mesh is redrawn on the canvas every single time I do a brush stroke and I have no control on the intensity of my strokes. My mesh is only 2mill polys and this never happened before until this new release. My machine has a AMD quad core and I have 8 GB of RAM. Please Pixologic, give us a solution for this. I can’t work with this bug happening all the time.
Yep I too have run into this issue. At as low as 3 million polys, the brush cursor can’t keep up with the stroke speed. At times the screen with freak out and redraw the model 4 or 5 times. I opened up Zbrush 4 and I don’t have this issue- night and day difference in performance. I’m running Windows 7 64bit, i7 6 core 3.2ghz, GTX 580 3gb graphics card, 24gb of ram. At first I thought it was my machine, my graphics card, but then I tried it at work on a Quadro 2000 card and same issue. It really impedes on any kind of speed sculpting that is for certain. How did this issue make it through beta testing? Oh yeah I know how, we were all too distracted with the shiny new dynamesh and fiber mesh to notice;] I really hope this is fixed in r3?