RecalBox JAMMA video low pass filter,

[pxl3d]

Hi,
Is there a way to enable or disable the LPF on the THS7374 RGB video buffer on the Recalbox jamma ? I can't seem to find it in any menu, and on the board it seems to be tied to a GPIO function rather than tied to Vih or Vil. Poking with my multimeter it defaults to being disable (+3.3V).
Cheers !