Why does the quality of my videos being reduced after uploading them to YouTube?

[Menelaos1996]

Hello everyone,
The problem I am experiencing is that I am currently into making games and upload them to my channel on YouTube but I am facing a challenge.
No matter how many threads I read on how to deal this problem I simply couldn't.
I am recording my game with OBS Studio on 720p, 8500 bitrate, N.264 codec and 16:9 aspect ratio. Rendering the video with Sony Vegas on the same settings and the video on my computer when I play it, it looks crystal clear but after uploading it to YouTube the quality decreases.
Well it pixelates to be honest.

Any help would be greatly appreciated.

 

[Glenwing]

If you watch it immediately after uploading it, it will look like crap, because it takes a little while for YouTube to process higher quality versions of the video. Go back and watch it after a few hours.

 

[Menelaos1996]

Thank you answering mate.
Have already a video which is 1 week old and it still looks like crap.
Thank you.

 

[theRTT]

Do you have a link to one of those video's?