Performance regression

[Martomate]

Apparently the rendering performance went down considerably between v0.10 and v0.11, at least on some Windows computers. I have tested it on my old Windows computer from 2016 and 14 fps became 7 fps after all the chunks loaded. My friend saw even bigger reductions on his computer a few days ago.

I first thought this might be caused by the recursive triangle image format, but that format was introduced in November of 2020 which was before v0.10.

My next guess would be the change from triangle strips to triangles, which was made in December of 2022. That change increased the number of triangles rendered by 50% for the top and bottom sides, but I wouldn't expect that to be much of a problem since I use instanced rendering, so it's not a problem of data transfer.

Either way, this is of course a major problem that has to be fixed pretty soon.