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UE 4.26.1 - Movie Render Queue & Cloth Simulation: chaotic behavior

Hello to the whole community. Always a pleasure to use UE4 … Version 4.26 is even better than the previous one, good job. Personally, I only use for rendering cinematics. The addition of Movie Render Queue is what we’ve all been waiting for! However, I noticed a totally erratic behavior when a character has a Cloth Simulation … the latter reacts in a totally erratic way. Even after the engine warmup and the tips for using the Movie Render Queue … I read some recommendations here and there, nothing helps …
Cloth Simulation does not seem to work with Movie Render Queue. I had to simply deactivate it … or use Sequencer Legacy

Same issue here … I gave a first look at the movie render queue to cranck up the quality of my renders, but cloths simulation are going crazy … I assume it has something to see with the simulation computed at each step of the subsample … :s any known work around ?

Yes … it is surely that … or something else, too bad … the quality of the renderings with MRQ is an excellent idea (well, after … the calculation takes us back “as in the good old days” rendering farms… Also, despite the warmup, a ghost image problem between each cut (very annoying and loss of time editing)

I’ve got the same issue. Cloth goes nuts in movie render. Any help would be appreciated.

https://epicgames.ent.box.com/s/8zzu8bastvh5h6bdch4p87on2gqk6001
side 58

what about this?

@Veteran: Thanks for the input. I looked into that. Unfortunately, this does not help. The cloth simulation still makes the cloth explode and implode every frame. This happens with temporal AA. I haven’t found a way to fix it anywhere. It does not happen with other AA methods.

Use motion blur. But blur amount has to be 1. No less. Camera and post process both

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This actually works!!! Thank you so much!

Can I ask what prompted you to find that motion blur was the solution to the problem?

We use motion blur normally already. So when i didn’t want use motion blur for a scene cloth became crazy :slight_smile: Then i searched why it’s happening. I mean this reason is so stupid there could be another reason but no. Motion blur was the problem :smiley:

Does anyone know another solution? Changing Motion Blur to 1.0 does indeed fix the issue, but now my renders have twice the motion blur… and looks… not great. Feels like post process motion blur. Curious if anyone has any other solution so I can get my motion blur back to the cinema proper .5