Speed and quality are not opposites. They are reinforcing — when you have the right feedback loops, you ship faster *because* you have fewer bugs.
The teams we work with that move fastest share three habits: they invest in their local development environment, they keep their main branch deployable at all times, and they treat flaky tests as production incidents.
None of this is novel. What separates teams that internalize it from teams that do not is the willingness to spend a week on the boring work — fixing the slowest test, the most painful build step, the most ambiguous error message — instead of starting on the next feature.
When in doubt, fix the loop, not the feature.