Download speed capped?

[xxx.sps]

So my internet is about 600Mbs for downloading but when installing updates the install maxes at about 20Mbs and then stays there. What is limiting my download speed and how can I removed the limiter? I don't believe it is hardware but I could be wrong, I don't have ethernet connection directly but speed tests still show about 600Mbs without ethernet.

[Levent]

Speedtest.net and alternatives as default only shows the speeds from servers closest to you. Your bottleneck might be congestion down the line, try testing with a server abroad or far away. Your ISP also might be throttling regular suspects like steam, netflix and windows update servers.

[Eigenvektor]

Slowest link determines the speeds. Just because you're able to download at 600 Mbps doesn't mean the server you're downloading from is capable (or willing) to upload at that speed. If a server has 1 Gbit upstream, but it's currently serving dowloads to hundreds or thousands of people, it'll have to split its bandwidth between these.

[xxx.sps]

I have tried super late at night and its still capped, Its i3 Fiber connection but they might have capped download speeds.

[Eigenvektor]

8 minutes ago, xxx.sps said:

I have tried super late at night and its still capped, Its i3 Fiber connection but they might have capped download speeds.

Late at night is middle of the day other side of the globe Depending on where the server is, late at night might not actually be the best time.

[xxx.sps]

2 minutes ago, Eigenvektor said:

Late at night is middle of the day other side of the globe Depending on where the server is, late at night might not actually be the best time.

Server is in the same state as me which is what is confusing, server is only for Illinois homes. 

[Eigenvektor]

1 minute ago, xxx.sps said:

Server is in the same state as me which is what is confusing, server is only for Illinois homes. 

In that case I'd assume it's simply the server's connection that is the bottleneck here. Such a server probably doesn't have the fastest connection available to it or may even be capped on purpose for some reason.

[Alex Atkin UK]

1 hour ago, Eigenvektor said:

In that case I'd assume it's simply the server's connection that is the bottleneck here. Such a server probably doesn't have the fastest connection available to it or may even be capped on purpose for some reason.

Indeed.  I'm renting a VPS in the US and its capped at 400Mbit.  Depending on what the server is for and how much money the people running it are willing to throw at it, capping is an easy way to keep costs down.  If I knew I wanted to be able to serve 100 clients, I might choose to further cap that VPS down to 4Mbit per client.