What slowed your progress more: bad code or slow feedback?

Question

Think about the last time you were stuck on a frustrating frontend problem. You were trying to get a complex CSS grid to align properly, or debugging a tricky JavaScript interaction.

Did you struggle because your logic was inherently flawed, or did you struggle because every time you made a tiny adjustment, it took five seconds for your online code editor or local environment to refresh the view?

I strongly believe that a slow feedback loop is the silent killer of developer productivity. When we have to wait to see the results of our code, we lose our train of thought. We stop experimenting. We get frustrated.

I’ve been building NitroIDE specifically to act as an instant frontend playground to eliminate this waiting period, but it made me wonder about the broader community's experience.

When you reflect on your own workflow, how much time do you think you lose simply waiting for your tools to render your changes? Do you feel like your current setup encourages rapid prototyping, or does it make you hesitant to experiment? Let's discuss.