Operating system: Windows-10-10.0.18362 64 Bits
Graphics card: GeForce GTX 1080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 430.86
Broken: version: 2.81 (sub 8), branch: master, commit date: 2019-09-07 20:51, hash: rB4764362ebb91
Short description of error
I've included the blender file as an attachment. Basically there are too grease pencil objects, and the other one has a pixelate effect. When the camera gets really close to the object, the pixelation scale breaks. I've showcased this with a camera that has keyframes at frame 1 and 60.
Here's a screenshot: