I can't say for sure what the problem is. Could be anything. A frequent culprit is overly aggressive real-time security/anti-virus software, as it insists on inefficiently examining every single packet as it comes in.

Another possibility is your ISP has oversold for the actual amount of bandwidth, and to keep traffic down they might throttle commonly high-bandwidth IPs, which can include Steam. If you call them about it they're unlikely to admit to this though.

One possible fix on Windows is to disable write caching on your SSD. (If you're using an SSD.) Apparently some cheap drives don't play well with this feature and slow your write speeds to a crawl.

Another common reason is your CPU. If it's old and/or slow, this will slow your download speeds because the data comes in compressed and it takes time and CPU cycles to decompress that data. The slower your CPU, the longer this will take, even if your drive and Internet can handle faster.

Those are only a few possibilities though. Your problem might be one or more of them, or none of them. I fairly confident that the problem is on your end though, not Steam.

It worked fine several months ago, so I think it was an update to Steam or something. Yesterday it seemed to work fine, but today it has been a bear. My system is fairly new, built it to play Star Citizen. Thanks for the reply, you are the first in the 4 posts I have made for this issue.