visibility keys not working in the middle of batch render packets

[smbell]

We've come across a weird issue in two seperate places on this project. We are keyframing the visibility of a vrayVolumeGrid explosion sequence and the visibility of a geometry object with a vrayEnvironmentFog shader on it. Both times, if the visibility key is in the middle of a packet submitted to our farm, then it doesn't get picked up until the start of the next packet. Rendering single frame packets solves it, but is not efficient as these are large scenes that take a while to get going.

Is there anything to look out for regarding this? Anything to try? I can try to strip down this scene later today and post it if it will help, it's a monster.

[nikolay.kusht]

Could you send us a simple test scene in order to reproduce the issue on our side