**System Information**
Operating system: Windows-10-10.0.22000-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 2060/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 497.29
**Blender Version**
Broken: version: 3.0.0, branch: master, commit date: 2021-12-02 18:35, hash: `rBf1cca3055776`
Worked: (newest version of Blender that worked as expected)
**Short description of error**
Using cycles X, opening the material preview causes my computer to lag and drop in FPS
**Exact steps for others to reproduce the error**
Create a new material and open the material preview with cycles x
For a new scene with default cube and default material, preview render completes in about 5 seconds.
With Beckmann glass it's ~10 seconds.
With Multiscatter GGX Glass, ~35 seconds.
(Size of preview render: 134x150px)