当谈到网络上的娱乐时，大多数人倾向于利用YouTube提供的服务，这很好，因为YouTube是在线观看视频的最佳场所，而且这种情况不会很快改变。虽然YouTube很棒，但它确实时不时遇到问题。有时，由于服务因未知原因而大大减慢，人们无法观看自己喜欢的视频。
修复 YouTube 加载缓慢
那么问题来了，这样的问题能否得到纠正，还是应该让用户等待几天再返回？好吧，您不必等待，因为有多种方法可以让事情得到控制并恢复到最佳性能。
1] 更改 YouTube 网址
这听起来可能很疯狂，但它确实有效，所以不要忽视相信我们会胡说八道。
好的，所以如果视频无法播放，我们建议将URL 中的www替换为(www)ca。是的，就是这么简单，而且它对某些人来说很好用。
2]降低视频质量
您可能习惯于流式传输高清视频，但这次您尝试观看的视频正在缓冲。在这种情况下，我们建议将质量更改为 480p 或更低。低于 360p 意味着视频会变得像素化，因此请记住这一点。
为此，请单击视频播放器上的齿轮图标(gear icon)，然后单击质量(Quality)。从这里，您可以轻松选择目前最适合您的需求。
3]清除网络浏览器的缓存
只需清除浏览器的缓存即可解决许多问题。因此，您需要清除 Chrome 浏览器缓存(clear your Chrome browser cache)或Edge 缓存(Edge cache)或您使用的浏览器的缓存。
4]阻止这些IP地址
在大多数情况下，我们中的许多人通过我们的互联网服务(Internet Service)提供商设置的内容交付网络在(Content Delivery Networks)YouTube上观看视频。(YouTube)这意味着，网络上的一些用户不会直接从YouTube观看内容，这使服务提供商能够限制流媒体视频的速度。
考虑到这一点，您必须考虑阻止两个 IP 地址以使其恢复正常，它们是173.194.55.0/24 和 206.111.0.0/1 6。
首先，您需要打开命令提示符(Command Prompt)。通过单击Cortana按钮执行此操作，然后在搜索框中键入命令提示符(Command Prompt)。您现在应该在搜索结果中看到命令提示符；(Command Prompt)所以只需右键单击它，然后选择以管理员身份运行。(Run)
下一步是将以下命令复制并粘贴到命令提示符(Command Prompt)中：
netsh advfirewall firewall add rule name=”YouTubeTweak” dir=in action=block remoteip=173.194.55.0/24,206.111.0.0/16 enable=yes
按Enter键，然后关闭窗口。
5] VPN服务
如果您使用的是VPN服务，我们建议您禁用它，看看是否会有所不同。
如果您不使用VPN，我们建议您使用免费的 VPN 软件(free VPN software)并将其用于视频流，看看是否更适合您。
Opera网络浏览器内置了免费的VPN服务(VPN)。只需(Simply)启动Opera，然后单击左上角的菜单按钮。(Menu)从那里，选择Settings，然后点击(Click)Advanced > Privacy & Security。向下滚动(Scroll)到VPN，然后启用它。
如果您使用的是Google Chrome，请阅读本文以找到适用于 Web 浏览器的 Chrome 的最佳且免费的 VPN 扩展程序。(VPN extension for Chrome)我们已经测试了所有这些，并且可以肯定地说它们已经足够好。但是，Opera中的(Opera)VPN选项要快得多。
Firefox 和 Chrome 用户可以查看这些浏览器扩展来改进 YouTube 流媒体(Browser extensions to improve YouTube Streaming)。(Firefox & Chrome users can take a look at these Browser extensions to improve YouTube Streaming.)
现在阅读(Now read)：如何提高Windows PC 上的YouTube 缓冲、性能和速度。(improve YouTube Buffering, Performance & Speed)
Fix YouTube slow loading & buffering issues
When it comes down to entertainment on the web, most tend to take advantage of what YouTube has to offer, and that’s great because YouTube is the best place to watch videos online, and that’s not going to change any time soon. While YouTube is awesome, it does suffer from problems now and again. There are times when folks are unable to watch their favorite videos due to the service slowing down considerably for reasons unknown.
Fix YouTube slow loading
The question is, then, can such problems be rectified or should users just wait a few days before returning? Well, you don’t have to wait because there are multiple ways to get things under control and back to peak performance.
1] Change the YouTube URL
This might sound crazy, but it works so don’t ignore believing we’re going to talk nonsense.
OK, so if the video is not working, we suggest replacing the www in the URL to ca. Yes, it’s that simple, and it works, well, for some.
2] Lower the quality of the video
Chances are you’re used to streaming videos in HD, but this time around the video you’re attempting to watch is buffering. In this case, we recommend changing the quality to 480p or lower. Going below 360p means the video will become pixelated, so bear this in mind.
To do this, click on the gear icon on the video player, then click on Quality. From here, you can easily choose which one is best for your needs at this time.
3] Clear your web browser’s cache
Many things can be fixed simply by clearing your browser’s cache. So you need to clear your Chrome browser cache or Edge cache or the cache of the browser you use.
4] Block these IP addresses
In most cases, many of us watch videos on YouTube via Content Delivery Networks our Internet Service Providers have set up. What this means, some users on the web are not watching content directly from YouTube, and this gives service providers the power to throttle speed for streaming videos.
With this in mind, you must consider blocking two IP addresses to get this back to normal, and they are 173.194.55.0/24 and 206.111.0.0/16.
First, you need to open the Command Prompt. Do this by clicking on the Cortana button, then type Command Prompt in the search box. You should now see Command Prompt in the search results; so simply right-click on it, and select Run as administrator.
The next step is to copy and paste the following command into the Command Prompt:
netsh advfirewall firewall add rule name=”YouTubeTweak” dir=in action=block remoteip=173.194.55.0/24,206.111.0.0/16 enable=yes
Hit the Enter key, then close the window.
5] VPN service
If you are using a VPN service, we suggest you disable it and see if that makes a difference.
If you are not using a VPN, we suggest you use a free VPN software and use it for video streaming and see if that works better for you.
The Opera web browser comes with a free VPN service built-in. Simply launch Opera, then click on the Menu button at the top-left corner. From there, select Settings, then Click on Advanced > Privacy & Security. Scroll down to VPN, then enable it.
If you’re using Google Chrome, then read this article to find the best and free VPN extension for Chrome for the web browser. We’ve tested all of them and can say for certain that they are good enough. However, the VPN option in Opera is much faster.
Firefox & Chrome users can take a look at these Browser extensions to improve YouTube Streaming.
Now read: How to improve YouTube Buffering, Performance & Speed on Windows PC.
