Slippy does support back/forward nav, but it indeed builds all slides at once. Which allows for the overview feature also (press TAB). I didn't test it with 200

Slippy does support back/forward nav, but it indeed builds all slides at once. Which allows for the overview feature also (press TAB). I didn't test it with 200-slides decks honestly, so maybe that would cause performance issues in that case. But so far in Chrome it has proven to be very smooth.