Flutter PTT Voice & Maps Enhancement

My live Flutter app already handles voice push-to-talk (PTT) and turn-by-turn navigation on both iOS and Android, but the current voice module needs a tune-up and the map layer could be richer.

Voice / PTT work
• I want the audio pipeline refactored for smoother, tighter PTT exchanges. Maybe a completely custom solution is required? It’s having a small issue with IOS voice kit…
• Expect to dive into the existing Flutter/Dart codebase, review the current streaming logic, refine codec selection, buffering, echo suppression, and anything else that can shave milliseconds off delivery while raising clarity.
• Proven experience with low-latency VoIP or walkie-talkie style apps is essential so you can spot edge-case glitches quickly.

Navigation work
• The map layer must present far more detailed cartography and push real-time updates (traffic, closures, live position of team members) with minimal lag.
• Whether you’re most comfortable with Mapbox, Google Maps, or another SDK, show me how you will enrich the tiles, overlays, and data refresh strategy without ballooning device resource use.

Deliverables (acceptance criteria)
1. Updated Flutter modules that plug into my repo cleanly, compile for both stores, and respect my existing app architecture.
2. Demonstrable PTT session where voice is noticeably crisper and latency is measurably reduced on mid-range devices and variable networks.
3. Navigation screen showcasing the new high-detail layers plus real-time update feed working for at least one hour without drift or crashes.

If you understand the subtleties of real-time voice, love squeezing performance from Flutter, and have wrestled with map SDKs in depth, I’m ready to share the repo and jump straight into a milestone plan.