What version of browserify do you have? I would try to update to the latest for sure… that was the bottleneck for me. I know they were working on updating support for the new 1.2 system (I think the old version doesn’t use it in 1.2)
I ended up switching to Webpack instead of the built in packager and my reloads are down to 0.8 - 1.5 seconds. It’s a hassle to migrate a large app but was rather fun on the weekend with a pint.
If you search the forums there’s two different webpack builds with different levels of ‘taking over’ your build process.