As per @wizarducks.bsky.social request, here is a formal tutorial on Reddit:
www.reddit.com/r/godot/comm...

Thanks!

Oh and furthermore, you need to set the cell size as your tile size divided by 10. (2.4 in my case). Furthermore you need to scale your gridmap by the snap vector.

Oh shoot good point

Hope this helps someone with similar issues!

The exact formula to snap to was the PIXEL_SIZE (which is my case would be something like 1.0 / 24.0, as my tiles are 24x24 pixels across) for the x axis, and the PIXEL_SIZE multiplied by the square root of 2 for the Y and Z axis (due to there being a 45 degree orthographic projection).

As it turns out, the fix involves snapping the camera's position so those seams wouldn't be visible.

Currently, no...
But that's the plan!

Trees will have much denser stylized leaves in future, along with a better log material. The materials currently used are placeholders

merry gyatmas

Yeah, and thanks!

No no, it's the fact that the camera will only maintain a "pixel perfect" view in rotations along the Y axis that are a multiple of 90 degrees. After all, the window is 640x360, and everything has been sorta calculated to fit that sort of a projection