I worked with React Native for 3 years before jumping over to Flutter and this was the biggest reason why I made the switch. Its exponentially better on Flutter. The only time builds break for the team are when we made a code change that broke it. Its consistent and non-flaky (looking at you RN). Not that you won't run into the occasional issue but with React Native easily 20% of my time developing was "this just stopped working and there's no reason why". React Native was configuration hell. With Flutter, I haven't struggled with that at all past the initial setup.
This has been my experience with RN too (admittedly, a few years back). So much time wasted on troubleshooting random glitches that occur for seemingly unrelated reason. Some minor library version update? Boom, your breakpoints no longer work. Why? Noone knows. The "turn it off, turn it on" approach seems to be the go-to fix in this environment. And there's always another surprise around the corner.
I can't really contrast it with Flutter, because I only toyed with it a little bit, but at least the docs were of much better quality - and this being a few years back as I said, the fact that Flutter was the newer framework (and still provided better quality at least in this area) was even more pronounced.