diff --git a/android/app/src/main/java/com/wzp/ui/call/CallViewModel.kt b/android/app/src/main/java/com/wzp/ui/call/CallViewModel.kt
index 5e7eae2..9edae46 100644
--- a/android/app/src/main/java/com/wzp/ui/call/CallViewModel.kt
+++ b/android/app/src/main/java/com/wzp/ui/call/CallViewModel.kt
@@ -138,7 +138,7 @@ class CallViewModel : ViewModel(), WzpCallback {
             ServerEntry("172.16.81.175:4433", "LAN (172.16.81.175)"),
             ServerEntry("193.180.213.68:4433", "Pangolin (IP)"),
         )
-        const val DEFAULT_ROOM = "android"
+        const val DEFAULT_ROOM = "general"
     }
 
     fun setContext(context: Context) {
diff --git a/crates/wzp-relay/src/handshake.rs b/crates/wzp-relay/src/handshake.rs
index 1c8cb29..278743b 100644
--- a/crates/wzp-relay/src/handshake.rs
+++ b/crates/wzp-relay/src/handshake.rs
@@ -89,20 +89,9 @@ pub async fn accept_handshake(
 
 /// Select the best quality profile from those the caller supports.
 fn choose_profile(supported: &[QualityProfile]) -> QualityProfile {
-    // Prefer higher-quality profiles. Use GOOD as default if supported list is empty.
-    if supported.is_empty() {
-        return QualityProfile::GOOD;
-    }
-    // Pick the profile with the highest bitrate.
-    supported
-        .iter()
-        .max_by(|a, b| {
-            a.total_bitrate_kbps()
-                .partial_cmp(&b.total_bitrate_kbps())
-                .unwrap_or(std::cmp::Ordering::Equal)
-        })
-        .copied()
-        .unwrap_or(QualityProfile::GOOD)
+    // Cap at GOOD (24k) for now — studio tiers (32k/48k/64k) not yet tested
+    // for federation reliability (large packets may exceed path MTU).
+    QualityProfile::GOOD
 }
 
 #[cfg(test)]