TVAI Rhea - optimising effects

Would appreciate any input as to how other users are utilising Rhea, specifically how to lessen its effects.
I’m loving Rhea and TVAI in general - I’ve been able to achieve some great outcomes improving my DVD collection.
One thing I’m stuck on is Rhea’s treatment of background, specifically landscape and vegetation which quite often becomes like a watercolour painting. Similarly, granular surfaces like rock and soil become ‘painted’. It’s as though Rhea is amalgamating and grouping similar coloured areas into regular shapes, believing there is a regular pattern where there is none.
I have on more than one occasion reverted to Iris, Nyx or even Vapoursynth to achieve a better outcome.
Nothing I have found comes close to Rhea in its ‘sweet spot’ which I have found to be upscaling 720p to 1080p.
My workflow comprises de-interlacing with QTGMC (inc some denoising and sharpening) outputing in FFV1 and upscaling in TVAI. Again I output in FFV1 and final render in x265 (CPU only). I have found this provides more control rather than utilising the TVAI options.
I have tried varying Rhea parameters and different pre-conditioning of the source, however a solution evades me (been using TVAI for a year).
I am interested in any experiences users have either in pre or post processing which may assist.

Yes, those repetitive low res patterns are one of the annoying things of rhea - plus the monster faces/creepy eyes.

You could try Rhea at 1x where those effects are minimised but still the source is cleaned up very well and then upscale the result in a second pass with Proteus or Artemis at minimal settings.

Noisy sources is a problem and the plastic look problematic. They should give us a 2x , or 2.25 optimized model (640x480->1440x1080). Now TVAI does for Rhea always internal 4x upscale and downscale to you’re set resolution

When possible is use Rhea most out of the box, without user settings. The thing is any value you set leads to pixel reordering. This does not mean that no values may be set, but when you do can do it without it, it’s better.

Many thanks for your reply, I will try this out and let you know how things turn out.

Thanks for that, I’ll try this out at the weekend and let you know how things go.