Operating system: Windows-10-10.0.18362 64 Bits
Graphics card: GeForce GTX 980/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 436.48
Broken: version: 2.81 (sub 14), branch: master, commit date: 2019-10-08 20:10, hash: rB6d3c34fe9d1e
Worked: Used to be faster earlier in the Alpha if I recall, but now it is barely usable even on lower subdivs.
Short description of error
Smoothing your sculpt with MultiRes on is not a very pleasant experience at the moment. Incredibly laggy when compared to all other brushes, especially with the latest patches that vastly improved brush speed and undo while using MultiRes. Since smoothing is such a common action to take while doing any sculpt work, it would be much appreciated if this was taken a look at.
Exact steps for others to reproduce the error