I attach here a notebook created by Mathematica 11.2. The machine I am running them is a Mac Pro 6.1, that is a 3.7GHz machine with 4 cores with a 500GB SSD drive and 64GB memory. Mathematica 11.0.1 run time of the `VectorPlot3D` is 1.10571 second. Mathematica 11.2 run time of the `VectorPlot3D` is 1247.3 second. The BenchMark test is about the same for both version. I want my money back. If that is not possible, Wolfram please send me about 10 Nvidia DGX so with 11.2 I can be in par with 11.0.1. Thanks ahead, János Attachments:

I really do not know if that was reasonable or not. The Wolframkernel is 64-bit, so it can grab quite a few bits of memory if it wants to. I definitely did not think that I had as much data to compute. However, because I mostly compute symbolically as long as I can, and turn to numerical approaches only as the last resort, so It is possible that very long expressions could have built up in the kernel memory.

One more tidbits to it. When I tried to plot it without `Evaluate`, it grabbed 20GB as "Cached Files". So, it was doing some heavy duty work on my SSD - although still there was plenty of real memory available -, but I realized it only after the facts. I do not know if it is still one of the side effects of the Frontend is being 32-bit. There were times a few years ago when I pushed the limits of this machine into 1% idle and constant swapping in and out of memory, virtual memory were going into hundreds of GBs, but even at those times the "Cached Files" never grew up to 20GB, see picture attached.

Thank you Kyle. I knew about the warning in the `VectorPlot3D` documentation, but looks like I did not take it seriously, because the plotting just worked in 11.0.1 and that made me lazy. Thanks again, János

VectorPlot3D underperformance in Mathematica 11.2 vs 11.0.1 ?