System Information
Operating system: Windows-10-10.0.22000-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 3060 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 497.29

Blender Version
Broken: version: 3.0.0, branch: K-CyclesX2, commit date: 2021-12-06 08:19, hash: rBd5a68eac25db
Worked: (newest version of Blender that worked as expected)

Short description of error
"Error writing tile to file" during animation render; error associated with one specific file/project (other files render fine with tiling enabled)
This file/project errors only when rendering with K-CyclesX2; default Blender 3.0 = no tiling error
This file/project renders very slowly, about 3 minutes/frame, while rendering with default (non-K-CyclesX2) Blender renders are about 30 seconds/frame

Exact steps for others to reproduce the error
Error associated with one file only; I would upload it, but it's 150MB and has proprietary content.