I am sorry to hear that... We tried adding a pause menu but we should have definitely prioritized it much sooner, because we had run out of time. Audio syncing issues were something we had to deal with early on but we had dealt with most of the bugs,
If you don't mind me asking, what browser did you try on? What's your CPU/GPU? With WebGL, the game is single-threaded so a modern CPU helps a lot with the stuff we are calculating,
-David