I remember playing this game for the GMTK23 jam and wow you have improved it so much well done! The general feel to the game is just a lot more polished now especially with the road improvements and the addition of the timer. Unfortunately the game was lagging a lot, but not during the tutorial, so it must be to do with all of the houses and planes in the level. It could also be because I played the browser version. Perhaps if you also experience lag then try to cut back on so many things going on in the level, but if not then I will just blame my laptop :) Great job though I can see the work you've put into this since GMTK, please keep working on this game it is a great concept! :)
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Wonderful! Yeah it's definitely not perfect, but now we're only updating 2 small chunks of the mesh per frame instead the entire mesh, and I can properly cull sections that are off-screen. Likely it's still slowing down when most or all of the meshes are on-screen, so that'll be some proper mesh optimization on top of the chunking.