diff --git a/src/components/logs-viewer/parse-worker.ts b/src/components/logs-viewer/parse-worker.ts
index 05a7a22a..f97a01eb 100644
--- a/src/components/logs-viewer/parse-worker.ts
+++ b/src/components/logs-viewer/parse-worker.ts
@@ -196,7 +196,10 @@ class AnsiParser {
 
     // const data = lines.join('\n');
     this.rawDataRows += lines.length;
-    this.lines.push(...lines);
+    lines.forEach((line) => {
+      this.lines.push(line);
+    });
+
     return {
       data: this.lines,
       lines: this.rawDataRows,
diff --git a/src/hooks/use-chunk-fetch.ts b/src/hooks/use-chunk-fetch.ts
index 728fba39..cbfbb202 100644
--- a/src/hooks/use-chunk-fetch.ts
+++ b/src/hooks/use-chunk-fetch.ts
@@ -99,17 +99,16 @@ const useSetChunkFetch = () => {
 
       public flush(done?: boolean) {
         if (this.buffer.length > 0) {
-          const currentBuffer = [...this.buffer];
-          this.buffer = [];
-          currentBuffer.forEach((item, i) => {
-            const isComplete = i === currentBuffer.length - 1 && done;
+          while (this.buffer.length > 0) {
+            const item = this.buffer.shift()!;
+            const isComplete = this.buffer.length === 0 && done;
             callback(item, {
               isComplete: isComplete || this.percent === 100,
               percent: this.percent,
               progress: this.progress,
               contentLength: this.contentLength
             });
-          });
+          }
         }
       }
 
@@ -145,7 +144,7 @@ const useSetChunkFetch = () => {
       try {
         const chunk = decoder.decode(value, { stream: true });
         bufferManager.add(chunk);
-        bufferManager.updateSpeed(chunk.length);
+        // bufferManager.updateSpeed(chunk.length);
         throttledCallback();
       } catch (error) {
         // handle error
diff --git a/src/pages/llmodels/components/instance-item.tsx b/src/pages/llmodels/components/instance-item.tsx
index 19aad117..f43d2fa1 100644
--- a/src/pages/llmodels/components/instance-item.tsx
+++ b/src/pages/llmodels/components/instance-item.tsx
@@ -25,7 +25,12 @@ import _ from 'lodash';
 import React, { useCallback, useEffect, useMemo } from 'react';
 import styled from 'styled-components';
 import { MODEL_INSTANCE_API } from '../apis';
-import { InstanceStatusMap, InstanceStatusMapValue, status } from '../config';
+import {
+  InstanceStatusMap,
+  InstanceStatusMapValue,
+  backendOptionsMap,
+  status
+} from '../config';
 import {
   DistributedServerItem,
   DistributedServers,
@@ -153,21 +158,17 @@ const RenderWorkerDownloading = (props: {
   distributed_servers?: DistributedServers;
   workerList: WorkerListItem[];
   instanceData: ModelInstanceListItem;
+  backend?: string;
 }) => {
-  const { distributed_servers, workerList, instanceData } = props;
-  const { ray_actors = [], subordinate_workers = [] } =
-    distributed_servers || {};
+  const { distributed_servers, workerList, instanceData, backend } = props;
 
-  let severList: DistributedServerItem[] = [];
-  if (ray_actors?.length > 0) {
-    severList = ray_actors;
-  } else if (subordinate_workers?.length > 0) {
-    severList = subordinate_workers;
-  }
+  const severList: DistributedServerItem[] =
+    distributed_servers?.subordinate_workers || [];
 
   if (
     instanceData.state !== InstanceStatusMap.Downloading ||
-    !severList.length
+    !severList.length ||
+    backend === backendOptionsMap.llamaBox
   ) {
     return null;
   }
@@ -486,21 +487,8 @@ const InstanceItem: React.FC<InstanceItemProps> = ({
   };
 
   const renderDistributionInfo = (distributed_servers: DistributedServers) => {
-    const {
-      rpc_servers = [],
-      ray_actors = [],
-      subordinate_workers = []
-    } = distributed_servers || {};
-
-    let severList: DistributedServerItem[] = [];
-
-    if (rpc_servers?.length > 0) {
-      severList = rpc_servers;
-    } else if (ray_actors?.length > 0) {
-      severList = ray_actors;
-    } else if (subordinate_workers?.length > 0) {
-      severList = subordinate_workers;
-    }
+    const severList: DistributedServerItem[] =
+      distributed_servers?.subordinate_workers || [];
 
     if (!severList.length) {
       return null;
@@ -658,6 +646,7 @@ const InstanceItem: React.FC<InstanceItemProps> = ({
                   handleChildSelect={handleChildSelect}
                 />
                 <RenderWorkerDownloading
+                  backend={modelData?.backend}
                   distributed_servers={instanceData.distributed_servers}
                   workerList={workerList}
                   instanceData={instanceData}