diff --git a/lib/community-sync.ts b/lib/community-sync.ts
index bc756a2..47b60ef 100644
--- a/lib/community-sync.ts
+++ b/lib/community-sync.ts
@@ -128,6 +128,7 @@ export class CommunitySync extends EventTarget {
 	#reconnectDelay = 1000;
 	#offlineStore: OfflineStore | null = null;
 	#saveDebounceTimer: ReturnType<typeof setTimeout> | null = null;
+	#syncedDebounceTimer: ReturnType<typeof setTimeout> | null = null;
 	#wsUrl: string | null = null;
 
 	constructor(communitySlug: string, offlineStore?: OfflineStore) {
@@ -757,7 +758,14 @@ export class CommunitySync extends EventTarget {
 			}
 		}
 
-		this.dispatchEvent(new CustomEvent("synced", { detail: { shapes } }));
+		// Debounce the synced event — during initial sync negotiation, #applyDocToDOM()
+		// is called for every Automerge sync message (100+ round-trips). Debounce to
+		// fire once after the burst settles.
+		if (this.#syncedDebounceTimer) clearTimeout(this.#syncedDebounceTimer);
+		this.#syncedDebounceTimer = setTimeout(() => {
+			this.#syncedDebounceTimer = null;
+			this.dispatchEvent(new CustomEvent("synced", { detail: { shapes } }));
+		}, 300);
 	}
 
 	/**
diff --git a/lib/folk-rapp.ts b/lib/folk-rapp.ts
index 42c6fba..6c3c35d 100644
--- a/lib/folk-rapp.ts
+++ b/lib/folk-rapp.ts
@@ -543,7 +543,12 @@ export class FolkRApp extends FolkShape {
 			if (pathParts.length >= 1) this.#spaceSlug = pathParts[0];
 		}
 		const space = this.#spaceSlug || "demo";
-		const iframeUrl = `/${space}/${this.#moduleId}`;
+		// On subdomain URLs (jeff.rspace.online), the server prepends /{space}/ automatically,
+		// so the iframe should load /{moduleId} directly. Using /{space}/{moduleId} would
+		// double-prefix to /{space}/{space}/{moduleId} → 404.
+		const hostname = window.location.hostname;
+		const onSubdomain = hostname.split(".").length >= 3 && hostname.startsWith(space + ".");
+		const iframeUrl = onSubdomain ? `/${this.#moduleId}` : `/${space}/${this.#moduleId}`;
 
 		const iframe = document.createElement("iframe");
 		iframe.className = "rapp-iframe";