diff --git a/src/state/CallViewModel/localMember/LocalMember.ts b/src/state/CallViewModel/localMember/LocalMember.ts
index 6ef494cd9..e41901b1f 100644
--- a/src/state/CallViewModel/localMember/LocalMember.ts
+++ b/src/state/CallViewModel/localMember/LocalMember.ts
@@ -170,7 +170,7 @@ export const createLocalMembership$ = ({
   logger: parentLogger,
   muteStates,
   matrixRTCSession,
-  roomId: roomId,
+  roomId,
 }: Props): {
   /**
    * This request to start audio and video tracks.
diff --git a/src/state/CallViewModel/localMember/LocalTransport.ts b/src/state/CallViewModel/localMember/LocalTransport.ts
index 10ea79c44..c189044f4 100644
--- a/src/state/CallViewModel/localMember/LocalTransport.ts
+++ b/src/state/CallViewModel/localMember/LocalTransport.ts
@@ -180,9 +180,28 @@ export const createLocalTransport$ = ({
       distinctUntilChanged(areLivekitTransportsEqual),
     );
 
+  let lockedTransportAddress: string | undefined = undefined;
   const preferredTransport$ = combineLatest([preferredConfig$, delayId$]).pipe(
     switchMap(async ([transport, delayId]) => {
       try {
+        // We want to copy over the address from the first member on the same sfu.
+        if (lockedTransportAddress === undefined) {
+          const firstMemberOnSameSfu = memberships$.value.value.find(
+            (m) =>
+              m.transports[0].type === "livekit" &&
+              m.transports[0].livekit_service_url ===
+                transport.livekit_service_url,
+          );
+          const copiedFromMemberOnSameSfuAddress = (
+            firstMemberOnSameSfu?.transports[0] as LivekitTransportConfig
+          )?.address;
+          const defaultAddress = roomId + ownMembershipIdentity.memberId;
+          lockedTransportAddress = copiedFromMemberOnSameSfuAddress ?? defaultAddress;
+        }
+        transport.address = lockedTransportAddress;
+        logger.info(
+          `Update preferredTransport$ ${transport.livekit_service_url} ${transport.address} with delayId ${delayId}`,
+        );
         return await doOpenIdAndJWTFromUrl(
           transport,
           forceJwtEndpoint,
@@ -308,11 +327,12 @@ async function doOpenIdAndJWTFromUrl(
     OpenIDClientParts,
   delayId?: string,
 ): Promise<LocalTransportWithSFUConfig> {
+  const sfuAddress = transport.address ?? roomId;
   const sfuConfig = await getSFUConfigWithOpenID(
     client,
     membership,
     transport.livekit_service_url,
-    roomId,
+    sfuAddress,
     {
       forceJwtEndpoint: forceJwtEndpoint,
       delayEndpointBaseUrl: client.baseUrl,
diff --git a/src/state/CallViewModel/remoteMembers/Connection.ts b/src/state/CallViewModel/remoteMembers/Connection.ts
index 013bd96c7..d0bb0812f 100644
--- a/src/state/CallViewModel/remoteMembers/Connection.ts
+++ b/src/state/CallViewModel/remoteMembers/Connection.ts
@@ -138,7 +138,7 @@ export class Connection {
 
   // TODO: can we just keep the ConnectionOpts object instead of spreading?
   private readonly client: OpenIDClientParts;
-  private readonly roomId: string;
+  private readonly sfuAddress: string;
   private readonly logger: Logger;
   private readonly ownMembershipIdentity: CallMembershipIdentityParts;
   private readonly existingSFUConfig?: SFUConfig;
@@ -152,12 +152,12 @@ export class Connection {
   public constructor(opts: ConnectionOpts, logger: Logger) {
     this.ownMembershipIdentity = opts.ownMembershipIdentity;
     this.existingSFUConfig = opts.existingSFUConfig;
-    this.roomId = opts.roomId;
+    this.sfuAddress = opts.transport.address ?? opts.roomId;
     this.logger = logger.getChild(
       "[Connection " + opts.transport.livekit_service_url + "]",
     );
     this.logger.info(
-      `constructor: ${opts.transport.livekit_service_url} roomId: ${this.roomId} withSfuConfig?: ${opts.existingSFUConfig ? JSON.stringify(opts.existingSFUConfig) : "undefined"}`,
+      `constructor: ${opts.transport.livekit_service_url} sfuAddress: ${this.sfuAddress} withSfuConfig?: ${opts.existingSFUConfig ? JSON.stringify(opts.existingSFUConfig) : "undefined"}`,
     );
     const { transport, client, scope } = opts;
 
@@ -284,7 +284,7 @@ export class Connection {
       this.client,
       this.ownMembershipIdentity,
       this.transport.livekit_service_url,
-      this.roomId,
+      this.sfuAddress,
       // dont pass any custom opts for the subscribe only connections
       {},
       this.logger,
diff --git a/src/state/CallViewModel/remoteMembers/ConnectionManager.ts b/src/state/CallViewModel/remoteMembers/ConnectionManager.ts
index 727f68bcc..83ebdac46 100644
--- a/src/state/CallViewModel/remoteMembers/ConnectionManager.ts
+++ b/src/state/CallViewModel/remoteMembers/ConnectionManager.ts
@@ -45,7 +45,9 @@ export class ConnectionManagerData {
   private getKey(transport: LivekitTransportConfig): string {
     // This is enough as a key because the ConnectionManager is already scoped by room.
     // We also do not need to consider the slotId at this point since each `MatrixRTCSession` is already scoped by `slotDescription: {id, application}`.
-    return transport.livekit_service_url;
+    return (
+      transport.livekit_service_url +"|"+ (transport.address ?? "default_address")
+    );
   }
 
   public getConnections(): Connection[] {
@@ -171,6 +173,7 @@ export function createConnectionManager$({
                 keys: [
                   transport.transport.livekit_service_url,
                   transport.sfuConfig,
+                  transport.transport.address,
                 ],
                 data: undefined,
               };
@@ -179,18 +182,20 @@ export function createConnectionManager$({
                 keys: [
                   transport.livekit_service_url,
                   undefined as SFUConfig | undefined,
+                  transport.address,
                 ],
                 data: undefined,
               };
             }
           }
         },
-        (scope, _data$, serviceUrl, sfuConfig) => {
+        (scope, _data$, serviceUrl, sfuConfig, address) => {
           const connection = connectionFactory.createConnection(
             scope,
             {
               type: "livekit",
               livekit_service_url: serviceUrl,
+              address,
             },
             ownMembershipIdentity,
             logger,
diff --git a/src/state/CallViewModel/remoteMembers/MatrixLivekitMembers.ts b/src/state/CallViewModel/remoteMembers/MatrixLivekitMembers.ts
index 0b93a274b..0bbc28013 100644
--- a/src/state/CallViewModel/remoteMembers/MatrixLivekitMembers.ts
+++ b/src/state/CallViewModel/remoteMembers/MatrixLivekitMembers.ts
@@ -157,7 +157,10 @@ export function areLivekitTransportsEqual<T extends LivekitTransportConfig>(
   t2: T | null,
 ): boolean {
   if (t1 && t2) {
-    return t1.livekit_service_url === t2.livekit_service_url;
+    return (
+      t1.livekit_service_url === t2.livekit_service_url &&
+      t1.address === t2.address
+    );
   }
   return !t1 && !t2;
 }