Windows 10: Why is my laptop struggling to run high-quality YouTube videos?

My laptop has been a low-end, slow device for the longest time. A few days, I finally decided to upgrade some components. I added another 4 GB RAM Totaling 8 GB and installed an SSD. I also installed a fresh Windows 10. The laptop performance has improved drastically except when trying to run high-quality YouTube videos, mainly 1080p or above. It was even worse before but it's still not gone.However, it's not the typical lagging. My internet is fine. It even shows that the video is loaded way ahead of the point where I'm watching. Yet it lags. But instead of just showing the loading animatio

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Can't get Youtube to show videos in Chrome

I haven't gotteen to this suggestion yet - but, I've shut down half my Extensions and, now, I get the voice of the Youtube videos - but still not the video. Thought this clue might help.

 

Can't get Youtube to show videos in Chrome

Load this checklist video in Edge:
(I'm assuming you did at least a few of these steps, since you stated you tried other suggestions earlier)

Go through the list of suggestions here to try to repair YouTube for Chrome...

 

High Quality YouTube Videos Coming

Anyone who has ever uploaded a video to YouTube, or watched a video on YouTube, knows that the quality isn't exactly something to write home about. To keep bandwidth costs and service speed up, YouTube administrators have, up until recently, limited uploaders to 100MB file size, and cropped all files to the paltry 320x240 resolution. YouTube already announced plans to increase the storage space, and now they are planning on doing something about the resolution. All files uploaded to YouTube are of a much higher quality, and some are even high-definition (1280x720 or better). YouTube representatives recently confirmed that YouTube does store the original versions, and only makes the compressed/shrunken version available to the average viewer. YouTube is currently testing a new version of the YouTube player, which determines your bandwidth, and adjusts your video quality accordingly. If all goes well, you can expect high-definition YouTube videos within three months.

Source: WebWare