Many users upgraded to macOS 文图拉 to enjoy its new features and improvements. However, a number of them have since reported internet connection problems in macOS Ventura, such as frequent disconnections, unusually slow speeds, or unstable connections. If you're experiencing these issues, don't worry—we're here to help. In this guide, we’ll walk you through the most effective ways to fix it. Plus, we’ll share a bonus tip at the end to help speed up your Mac and improve overall performance.

内容： Part 1. Why Is the Internet so Bad on My macOS Ventura?Part 2. How to Fix macOS Ventura WiFi & Internet Connection Problems?Part 3. Bonus – Easy Way to Speed Up macOS Ventura部分4。 结论

部分1。 Why Is the Internet so Bad on My macOS Ventura?

Why do I have internet connection problems in macOS Ventura? Experiencing slow or unstable internet on Mac can be frustrating, especially when other devices work fine. There are several common causes, ranging from software bugs and misconfigurations to interference and hardware limitations.

  1. DNS or Network Configuration Issues
  2. Wi-Fi Interference or Weak Signal
  3. Background Processes & iCloud Sync
  4. Software Bugs or Updates
  5. VPNs or Firewalls
  6. PRAM, SMC, or Network Reset Needed

部分2。 How to Fix macOS Ventura WiFi & Internet Connection Problems?

How to fix internet connection problems in macOS Ventura? Here are the most effective steps to restore a fast and stable connection on your Mac:

1. Restart Your Mac and Router

This may sound simple, but restarting can fix temporary glitches in network configuration. This clears temporary IP conflicts, resets router cache, and allows your Mac to reconnect cleanly to the network.

  • 重新启动您的Mac: Click the Apple menu > Restart.
  • 重新启动路由器: Unplug it for 30 seconds, then plug it back in.

重启你的Mac

2. 忘记并重新连接 Wi-Fi 网络

To fix internet connection problems in macOS Ventura, one thing you should do is to disconnect the WiFi connection and reconnect it later.

  1. 在MyCAD中点击 软件更新 System Settings > Network > Wi-Fi.
  2. 点击 信息 button next to your network.
  3. 选择 忘记这个网络, then reconnect by entering the password again.

Forget This Network Mac

This clears any corrupted settings that may have saved incorrectly, especially after system updates.

3. Use Custom DNS Servers

Sometimes, the problem isn't your Mac or Wi-Fi, but the DNS（域名系统） your ISP uses. You can switch to faster, more reliable public DNS servers:

  1. System Settings > Network > Wi-Fi > Details > DNS.
  2. 添加：
  • Google DNS： 8.8.8.8, 8.8.4.4
  • 云flare DNS： 1.1.1.1, 1.0.0.1

These servers often respond faster than your ISP’s default, improving browsing speed and reliability.

4. Run macOS Wireless Diagnostics

If you're experiencing internet connection problems in macOS Ventura, Apple’s built-in Wireless Diagnostics tool can help identify the root cause. Here’s how to use it:

  1. Hold the Option key and click the Wi-Fi icon in the menu bar.
  2. 选择 “开放式无线诊断” 从下拉菜单中选择。
  3. When the assistant opens, you can either run the full diagnostic scan or skip it and go to the menu bar.
  4. 点击 Window > Scan to view nearby networks and suggested channels.
  5. 点击 Window > Performance to monitor signal quality, noise, and data rate.

These tools can detect issues like weak signal strength, overlapping channels, and network interference—all common reasons behind internet connection problems in macOS Ventura. Wireless Diagnostics will also generate a detailed report (stored in /var/tmp) which you can review or send to support if needed.

5. Disable VPNs, Firewalls, or Third-Party Security Apps

If you use apps like NordVPN, ProtonVPN, Little Snitch, or LuLu, they could be interfering with Ventura's internet traffic.

  1. Temporarily disable them.
  2. Test internet speed and stability.
  3. If it improves, try updating or replacing the app, or adjusting its filtering settings.

男子相关话题： 如何在 Mac 上删除 ProtonVPN（故障排除指南）

6. Reduce Network Load from Background Services

A common but overlooked cause of internet connection problems in macOS Ventura is excessive background activity. Features like iCloud syncing, automatic app updates, and system services can silently consume bandwidth, slowing down your network.

To reduce this network load:

  1. Pause iCloud syncing temporarily via System Settings > Apple ID > iCloud Drive.
  2. 关闭后台程序刷新 for unnecessary apps.
  3. 可选 Activity Monitor > Network tab to find which apps are using bandwidth and quit high-usage processes.

Mac 活动监视器

7. Change Wi-Fi Channels and Frequency Bands

If you're in an apartment or crowded Wi-Fi zone, interference can slow down your connection:

  1. Log into your router (usually via 192.168.1.1 in a browser).
  2. 切换到 5GHz频段, which is faster and less crowded than 2.4GHz.
  3. Use Apple’s Wireless Diagnostics > Scan window to find the least congested channels and change to those manually in your router settings.

8. Create a New Network Location

This creates a clean profile for your connection:

  1. 在MyCAD中点击 软件更新 System Settings > Network.
  2. 单击旁边的下拉菜单 地址， 然后 Edit Locations > + (Add).
  3. Name it something like "New WiFi Profile" and click 完成 .
  4. Reconnect to your Wi-Fi and test the performance.

Part 3. Bonus – Easy Way to Speed Up macOS Ventura

If you're still experiencing lags, your system might be overwhelmed by background processes, junk files, or startup items. iMyMac PowerMyMac can simplify your cleanup process:

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使用 PowerMyMac 的好处：

  • 垃圾文件清理器： 清除系统垃圾、日志和旧文件可能会降低系统性能并影响应用程序同步。
  • 内存优化器： 释放 RAM 以保持日历应用程序平稳运行，尤其是在同步多个共享日历时。
  • 重复查找器： 帮助清除不必要地占用存储空间的重复文件，提高系统响应能力。
  • 应用程式解除安装程式： 全然 卸载不需要的应用程序及其残留文件.
  • 隐私保护： 清除浏览器历史记录、cookie 和使用日志，保护您的隐私。

PowerMyMac 应用程序卸载程序

部分4。 结论

Internet connection problems in macOS Ventura are often tied to misconfigurations, background syncing, outdated software, or third-party apps. Fortunately, most of these issues can be resolved through a combination of manual resets and simple settings adjustments. For a smoother experience, tools like PowerMyMac offer automated cleanup and network optimization, helping to eliminate hidden problems in macOS Ventura. Keeping your system updated, resetting network preferences, and monitoring background activity can significantly improve both your Wi-Fi stability and overall internet performance on Ventura.

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