Operating system: Windows-10-10.0.18362 64 Bits
Graphics card: GeForce GTX 1050 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 431.86
Broken: version: 2.81 (sub 13), branch: master, commit date: 2019-10-04 22:33, hash: rBab519b91b2c4
Short description of error
Folder full of .EXR Environment maps that are 20 to 70 mb each
The thumbnail generation of these freezes my PC for 10 - 20 min as it generates them.
Windows doesn't freeze when generating them though.
in Blender 2.79 it crashes.
I'm not sure if this can be helped.
Exact steps for others to reproduce the error
Open Blender 2.81 or 2.80
Shader editor > World > Environment Texture > Open > Browse to a folder containing around 10 .exr images of 20 - 70 mb each > Switch to Thumbnail view.
*PC slows down and eventually freezes for 10 - 20 min as it generates the thumbnails.