This depends on which version you use. I also experienced input lag in Chrome with the WebGL version under Linux. Maybe try it with the native versions instead because these are more optimized and run better in general. Should have had written that in the description. I’ll do that now…
The highlighting idea of the traps is brilliant! If we decide to make a full game out of this, we’ll implement this, thank you! Another thing that we came up with was to spawn blood after some deaths at the same spot, that way you can tell if there is a trap but your approach seems better.