Animation Flickering

[acrobaticpoly]

Hi there,
We're having an issue with a simulation that involves water coming out of a faucet.
The water simulation causes flickering and we've tried numerous things that have not solved it. I've attached a clip of the animation here.
UHD is set to Animation (Flicker free) but as you can see, we have an abundance of it!
We've attempted to move the entire scene into a new fresh scene and try that way but it still continues to happen. One thing we have noticed is that the flickering starts at different frames every time we render - on occasion it'll start flickering on the 15th frame, and then the 20th frame and then we'll make adjustments and it'll begin flickering on the 12th frame.
We initially created a UHD cache to save on pre-computation and thought that was causing it - we redone the cache, still flickering. We then removed the cache altogether and still an issue.

We've also posted this to the Chaos Phoenix forums but I thought it would be good getting a wider range of eyes on this.

Any help would be much appreciated!
Many thanks,

[Tom]

Hi,

While I can understand you're using UHD cache to save precomputation time, the fact is it ends up with flickering.
Did you try Path tracing for both solvers?

[romullus]

To be honest that doesn't look like GI flickering. It appears to me like there could be something wrong with the sim mesh. Maybe its topology becoming open at some frames and that messes up with refraction. If that's the case then tinkering with render settings won't help much, you'd need to fix geometry to solve the issue.