Sharpscale regular PS content

[RuiOrey]

Hi, not sure this is an issue on VitaDock or Sharpscale's.
When on Adernaline PS games, there seems to be some bilinear/smoothing filter after scaling when using Original Mode.
That does not seem to happen on Original PS Settings menu, but as soon as we went into the game, it comes back.
Is there any way to disable that filtering or scaling?
Thanks

[RuiOrey]

seems related to this