3x was the highest I could endure. With and without smoothing.
Higher is fine for regular games but the dithered 3D vector graphics are so garbled that it gets painful on the brain if they’re not tiny.
When it’s tiny the brain can reconstruct the missing pixels and figure out the “grays” and best-guess the polygon edges making the game playable.
When the pixels become large squares looks like that part of the visual cortex stops working its magic.
I could put an option for swtiching between 128x64 or OpenGL and pixel zoom factor. Let people enjoy the eye burn if they’re into that