Then i can't play this forever i can't just update my trash... Believe me i try many times but is no use... Normaly all the other ren'py games works but is like this version of ren'py is too old that even my pc can't process the graphic or something like that... My old Windows XP by the way work a little, the graphics don't go pink but is too slow that freeze all the pc...
It's not Ren'Py, it's
Unity (just look at the bloody thread title) with Fungus for the 3D work.
This game requires sufficient hardware because everything is being hardware rendered, unlike Ren'Py VNs with pre-rendered user/dev generated pictures.
Between using Fungus and how KST's made the game, loading times/scene transitions get longer with each update, and it's to the point that basic SSDs are only ameliorating the issue.
My old/backup machine runs it ok, and that's an obsolete Windows 8.1 machine with 4GB RAM and an i3 530 (that's a first generation i3 CPU), not using a SSD and the bulk of the work being done by my current, but still obsolete graphics card - Radeon R9-270.
The game is slower than it should be on even that machine, but the GPU lessens the potential problems.