diff --git a/core/server/internal/boxdns/dns_manager_windows.go b/core/server/internal/boxdns/dns_manager_windows.go
index e03761f..89a271f 100644
--- a/core/server/internal/boxdns/dns_manager_windows.go
+++ b/core/server/internal/boxdns/dns_manager_windows.go
@@ -11,7 +11,6 @@ import (
 	"nekobox_core/internal/boxdns/winipcfg"
 	"net/netip"
 	"strings"
-	"time"
 )
 
 const (
@@ -24,7 +23,6 @@ var dnsIsSet bool
 
 func HandleInterfaceChange(_ *control.Interface, _ int) {
 	monitorForUnderlyingDNS()
-	time.Sleep(2 * time.Second)
 	if !dnsIsSet {
 		return
 	}
diff --git a/src/api/gRPC.cpp b/src/api/gRPC.cpp
index d7bf37a..c20e40b 100644
--- a/src/api/gRPC.cpp
+++ b/src/api/gRPC.cpp
@@ -145,7 +145,7 @@ namespace QtGrpc {
 
         QNetworkReply::NetworkError Call(const QString &methodName,
                                          const google::protobuf::Message &req, google::protobuf::Message *rsp,
-                                         int timeout_ms = 0) {
+                                         int timeout_ms = 2000) {
             if (!NekoGui::dataStore->core_running) return QNetworkReply::NetworkError(-1919);
 
             std::string reqStr;