Maybe the Krokodove Transform Relative can help you out?

Here's a setup which could get you started...
(it uses a pre-created plane in max. I have added a few resolutions)
You will need to play around a little more to get the proper particle feel (gravity, drag, ...)

Hi

I've had similar problems with drone footage moire, I am however new to fusion so I wouldn't be able to recommend a specific tool but I usually use Resolve or AE to localize a blur to a specific region and then blur the horizontal and vertical separately.

I'm sure one could do it with 3 Variblurs localized on the affected regions and weighted more toward the horizontal than the vertical?

Ah… I'd overlooked the Mocha part of that—those baked splines are a gigantic amount of data usually. Perhaps choose a frame where the problem is most evident, make a copy of all the nodes in your comp, and then delete all the animation from the copies. That should make the tools small enough to paste here.

Here's a lightwrap setup I use frequently:

I'm not sure why doing it in sRGB looks better; it just does.

edit: One more thing to try—change the Clipping mode of your Blur to None.

Yeah, that one's a little strange. When you activate clone mode, an input field for the Source Tool appears. Drag your source into that field, and then the time offset slider will work. You have to do this even if the source is already connected to the main input of the Paint tool. Also, if you want to change the time offset, it's a good idea to start another Paint node, or at least a new multi-stroke. In my experience, changing the offset will appear to work while you're painting, but when you...

i would go for a Brightness/Contrast instead of the ChannelBoolean and gain it to 0 (mark red,green,blue and alpha)
its faster for me then the boolean

Ah. Yeah, that makes more sense.

The only difference might be that when you move it to RGB layers its getting normalized or some other anomaly which it shouldn't.

He probably means that once they are in RGB it's easier to control and postprocess them.