diff --git a/src-tauri/src/cmd/system.rs b/src-tauri/src/cmd/system.rs
index 5363d785..f3f2ac0c 100644
--- a/src-tauri/src/cmd/system.rs
+++ b/src-tauri/src/cmd/system.rs
@@ -5,8 +5,10 @@ use crate::{
     wrap_err,
 };
 use once_cell::sync::Lazy;
-use std::sync::atomic::{AtomicI64, Ordering};
-use std::time::{SystemTime, UNIX_EPOCH};
+use std::{
+    sync::atomic::{AtomicI64, Ordering},
+    time::{SystemTime, UNIX_EPOCH},
+};
 use tauri_plugin_clipboard_manager::ClipboardExt;
 
 // 存储应用启动时间的全局变量
diff --git a/src-tauri/src/core/tray/speed_rate.rs b/src-tauri/src/core/tray/speed_rate.rs
index b3beb30c..c061fb93 100644
--- a/src-tauri/src/core/tray/speed_rate.rs
+++ b/src-tauri/src/core/tray/speed_rate.rs
@@ -38,12 +38,20 @@ impl SpeedRate {
 
         let (current, previous) = &mut *rates;
 
-        // 如果速率变化不大（小于10%），则不更新
-        let should_update = {
-            let up_change = (current.up as f64 - up as f64).abs() / (current.up as f64 + 1.0);
-            let down_change =
-                (current.down as f64 - down as f64).abs() / (current.down as f64 + 1.0);
-            up_change > 0.1 || down_change > 0.1
+        // Avoid unnecessary float conversions for small value checks
+        let should_update = if current.up < 1000 && down < 1000 {
+            // For small values, always update to ensure accuracy
+            current.up != up || current.down != down
+        } else {
+            // For larger values, use integer math to check for >5% change
+            // Multiply by 20 instead of dividing by 0.05 to avoid floating point
+            let up_threshold = current.up / 20;
+            let down_threshold = current.down / 20;
+
+            (up > current.up && up - current.up > up_threshold)
+                || (up < current.up && current.up - up > up_threshold)
+                || (down > current.down && down - current.down > down_threshold)
+                || (down < current.down && current.down - down > down_threshold)
         };
 
         if !should_update {