With a Core i7, I wasn't expecting the simulation to run so slow, even at the lowest settings.. Maybe Firefox on RHEL 6 isn't the optimal platform for this little toy?
--edit: it runs much, much faster on Firefox with Windows 8.1. Not a Core i7, but an AMD 8-core thing. Must be Firefox on Linux's implementation, unless it's a video card/driver thing.
Runs pretty fast with Chromium on Linux, but in Firefox it's pretty slow as well.
That's with a 2-core 1.7GHz i7
It's probably the physics simulation. Though random JS benchmarks show Chrome and Firefox to be approximately equal in JS performance on my computer, Chrome beating FF slighly on sunspider and the other way around with Octane.
--edit: it runs much, much faster on Firefox with Windows 8.1. Not a Core i7, but an AMD 8-core thing. Must be Firefox on Linux's implementation, unless it's a video card/driver thing.