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Plastica: Experimental 3D typeface issues

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Hello guys,
I’m nearly finishing work on my new experimental 3D typeface called Plastica. I’m facing few problems I would like to discuss.

It is CFF OpenType made in FontLab on PC. Outlines are very precise and I used atypical custom UPM of 2300 units (23 modules at 100 units). But this should be fine regarding to older nodes on Typophile.
There are two versions: Plastica One (Striped) and Plastica Two (Outlined).
And here is what I struggle with:

1) On-screen rendering issues: