Step 1. First of all download and install the Smart Video for YouTube extension in your Google chrome or Mozilla Firefox. I am going to show you the full tutorial on Google Chrome because many of us mostly prefer Google chrome.
Step 2. Now after the installation plays any video on YouTube and then you will be able to see some of the additional options under your playing video. You just need to move your Mouse cursor in between youtube videos and you can see a small rectangular box popping up.
Step 3. Now click on the Global Preferences at the right side of your playing video, Then check mark the Smart Buffer Box. You don’t need to do anything else here.
Step 4. Now, it will force buffer your YouTube video. That’s it! you will see your youtube video will buffer faster and enjoy the high-speed video streaming experience over youtube.