This concept may seem counterintuitive but if you become a regular uploader of rather large files, no matter how fast your connection the bandwidth will be mostly used by youtube.
If you want to do anything else this is kind of annoying especially to other users on the network.
In Chrome you can impose a limit in developer tools and restricting to between 50% and 70% of maximum will mean most other things you do are barely affected.
This is probably the most comprehensive guide. There are some confusing youtube videos describing it too.
Limit Upload Speed in Google Chrome for individual websites (without plugins)
If you want to do anything else this is kind of annoying especially to other users on the network.
In Chrome you can impose a limit in developer tools and restricting to between 50% and 70% of maximum will mean most other things you do are barely affected.
This is probably the most comprehensive guide. There are some confusing youtube videos describing it too.
Limit Upload Speed in Google Chrome for individual websites (without plugins)