### Description We [recently upgraded Sentry to React 19.2](https://github.com/getsentry/sentry/pull/100834) and it's been freezing up when developing locally. Production works fine. See [this slack thread](https://sentry.slack.com/archives/C8V02RHC7/p1759780525077339) for more context, but removing `reactRouterV6BrowserTracingIntegration` fixes the perf issue. For now we've [disabled the integration](https://github.com/getsentry/sentry/pull/101169) in non-production environments.