[colordrops]

How does it slow down progress?

[dublo7]

For me it doesn't. It's a quick way to see that I made a typo when a keyword doesn't turn the right color, or that I closed a strong with the wrong quote Mark.

[sifoobar]

I find it's a bit like navigating using GPS, once I get there I still have no clue because I was mostly acting on cues.

Slow compiles have the same effect for me, I get pushed out of flow and into reactive mode.

The only way to write good code is to be proactive, and any features that interfere with that process are worse than whatever "problems" they "solve".