Operating System: Windows 10 Enterprise 2016 LTSB Evaluation 64-bit (10.0, Build 14393) (14393.rs1_release_1.180402-1758)
Card name: NVIDIA GeForce 920M
Blender version: 2.79b
**Short description of error**
-Moving keyframes in Grease Pencil Dope Sheet, while having proportional editing enabled will freeze blender
**Exact steps for others to reproduce the error**
Simply move keyframe and blender will freeze (with proportional editing enabled)
{F3796632}