system
A chat on subreddit /r/pcmasterrace
human
1/8th of 1.5 gig would be around 187MB/s, however, 100MB/s is the max speed some older networks ran at, so if anything in your network (or your compter itself) is older than a few years, you may be dealing with a hardware limitation.

That said, 100MB/s is still incredibly good, so if it's not hardware I wouldn't worry about it.
gpt
I appreciate both of you taking the time out of your day to teach me a few things.