Last day before deadline I tried to optimize for web but I couldn't get more than 7 fps with a lag spike each time a section is generated. You have a Mac? Libgdx has a big which makes the modelcache (grouping models to write to the buffer) not work as intended for the Mac. But after optimizing it did work for two people and got 40+ fps instead of < 10.
Playing does give less motion sickness I think. The camera also needs a bit more love but I like it much better then the static camera I had.