diff --git a/luci-app-passwall/luasrc/model/cbi/passwall/client/node_list.lua b/luci-app-passwall/luasrc/model/cbi/passwall/client/node_list.lua
index 33587b183..61dd830f9 100644
--- a/luci-app-passwall/luasrc/model/cbi/passwall/client/node_list.lua
+++ b/luci-app-passwall/luasrc/model/cbi/passwall/client/node_list.lua
@@ -14,6 +14,7 @@ o = s:option(ListValue, "auto_detection_time", translate("Automatic detection de
 o:value("0", translate("Close"))
 o:value("icmp", "Ping")
 o:value("tcping", "TCP Ping")
+o.description = translate("To optimize performance, auto-detection is disabled when there are more than 30 nodes.")
 
 o = s:option(Flag, "show_node_info", translate("Show server address and port"))
 o.default = "0"
@@ -23,6 +24,24 @@ s:append(Template(appname .. "/node_list/link_add_node"))
 
 local auto_detection_time = m:get("@global_other[0]", "auto_detection_time") or "0"
 local show_node_info = m:get("@global_other[0]", "show_node_info") or "0"
+if auto_detection_time ~= "0" then
+	local node_count = 0
+	for k, e in ipairs(api.get_valid_nodes()) do
+		if e.protocol ~= "_shunt" and e.protocol ~= "_balancing" and e.protocol ~= "_urltest" and e.protocol ~= "_iface" then
+			node_count = node_count + 1
+		end
+	end
+	if node_count > 30 then auto_detection_time = "0" end
+end
+
+-- Pass the auto_detection_time global variable to the webpage
+local o = s:option(DummyValue, "_auto_detection_time")
+o.rawhtml = true
+o.default = string.format([[
+	<script>
+		window.auto_detection_time = "%s";
+	</script>
+]], auto_detection_time)
 
 -- [[ Node List ]]--
 s = m:section(TypedSection, "nodes")
@@ -149,13 +168,15 @@ o = s:option(DummyValue, "ping", "Ping")
 o.width = "8%"
 o.rawhtml = true
 o.cfgvalue = function(t, n)
-	local result = "---"
-	if auto_detection_time ~= "icmp" then
-		result = string.format('<span class="ping"><a href="javascript:void(0)" onclick="javascript:ping_node(\'%s\', this, \'icmp\')">%s</a></span>', n, translate("Test"))
-	else
-		result = string.format('<span class="ping_value" cbiid="%s">---</span>', n)
+	local protocol = m:get(n, "protocol")
+	if protocol == "_shunt" or protocol == "_balancing" or protocol == "_urltest" or protocol == "_iface" then
+		return string.format('<span class="ping_value" cbiid="%s">---</span>', n)
+	end
+	if auto_detection_time ~= "icmp" then
+		return string.format('<span class="ping"><a href="javascript:void(0)" onclick="javascript:ping_node(\'%s\', this, \'icmp\')">%s</a></span>', n, translate("Test"))
+	else
+		return string.format('<span class="ping_value" cbiid="%s">---</span>', n)
 	end
-	return result
 end
 
 ---- TCP Ping
@@ -163,13 +184,15 @@ o = s:option(DummyValue, "tcping", "TCPing")
 o.width = "8%"
 o.rawhtml = true
 o.cfgvalue = function(t, n)
-	local result = "---"
-	if auto_detection_time ~= "tcping" then
-		result = string.format('<span class="ping"><a href="javascript:void(0)" onclick="javascript:ping_node(\'%s\', this, \'tcping\')">%s</a></span>', n, translate("Test"))
-	else
-		result = string.format('<span class="tcping_value" cbiid="%s">---</span>', n)
+	local protocol = m:get(n, "protocol")
+	if protocol == "_shunt" or protocol == "_balancing" or protocol == "_urltest" or protocol == "_iface" then
+		return string.format('<span class="tcping_value" cbiid="%s">---</span>', n)
+	end
+	if auto_detection_time ~= "tcping" then
+		return  string.format('<span class="ping"><a href="javascript:void(0)" onclick="javascript:ping_node(\'%s\', this, \'tcping\')">%s</a></span>', n, translate("Test"))
+	else
+		return  string.format('<span class="tcping_value" cbiid="%s">---</span>', n)
 	end
-	return result
 end
 
 o = s:option(DummyValue, "_url_test", translate("URL Test"))
diff --git a/luci-app-passwall/luasrc/view/passwall/node_list/node_list.htm b/luci-app-passwall/luasrc/view/passwall/node_list/node_list.htm
index ef64abace..d94416802 100644
--- a/luci-app-passwall/luasrc/view/passwall/node_list/node_list.htm
+++ b/luci-app-passwall/luasrc/view/passwall/node_list/node_list.htm
@@ -46,8 +46,7 @@ table td, .table .td {
 
 <script type="text/javascript">
 	//<![CDATA[
-	let auto_detection_time = "<%=api.uci_get_type("@global_other[0]", "auto_detection_time", "0")%>"
-	
+
 	var node_list = {};
 	var node_count = 0;
 
@@ -314,7 +313,7 @@ table td, .table .td {
 
 	/* 自动Ping */
 	function pingAllNodes() {
-		if (auto_detection_time == "icmp" || auto_detection_time == "tcping") {
+		if (window.auto_detection_time == "icmp" || window.auto_detection_time == "tcping") {
 			var nodes = [];
 			const ping_value = document.getElementsByClassName(auto_detection_time == "tcping" ? 'tcping_value' : 'ping_value');
 			for (var i = 0; i < ping_value.length; i++) {
diff --git a/luci-app-passwall/po/zh-cn/passwall.po b/luci-app-passwall/po/zh-cn/passwall.po
index d08c7d937..cee07d886 100644
--- a/luci-app-passwall/po/zh-cn/passwall.po
+++ b/luci-app-passwall/po/zh-cn/passwall.po
@@ -628,6 +628,9 @@ msgstr "延迟"
 msgid "Automatic detection delay"
 msgstr "自动检测延迟"
 
+msgid "To optimize performance, auto-detection is disabled when there are more than 30 nodes."
+msgstr "为优化性能，超过 30 个节点不自动检测。"
+
 msgid "Show server address and port"
 msgstr "显示服务器地址和端口"