Slow Internet Speed on Windows 10 1809

Speedguide's TCPOptimizer has been a mixed bag for me but after a few hours of troubleshooting, saw this post you shared and it took me from 10-100 down to 8-900 down on my gig connection.  This was soon after upgrading to 1903 and got the June updates.  Appreciate it!

There is a solution for a number of Dell Inspiron users who, sadly, will find no relief from a vexing slow download/normal upload speed issue, despite trying all the great advice on this thread (especially the excellent TPC Optimizer tool at speedguide.net, which is the best way to safely and automatically make helpful registry tweaks).

The issue is the SmartByte application (designed to reserve bandwidth for video streaming in the face of Windows Updates, etc.), which causes issues on a number of Inspiron machines with certain network controllers.   While Dell does have a note on this with advice (https://www.dell.com/support/article/us/en/04/sln309274/smartbyte-application-may-contribute-to-slow-network-performance-and-audio-issues-with-inspiron-systems?lang=en), I found a simpler solution to quickly boost my speed from a crawling 10Mbps to the 100 Mbps I was paying for:

1. Locate and launch the Smartbyte App.  Then you can either turn it off or adjust it to provide full bandwidth, as follows:
2. Click the 'gear' icon in the upper right to launch the Advanced Settings
3. Click the "Manually Set Bandwidth" checkbox, then type your ISP's stated max download speed into the left box, then click 'Save'
4. Note that the "Dynamic Bandwidth" toggle will turn off when you select the 'Manual' setting, and while Dell recommends the dynamic setting as part of their 'solution.' it didn't work for me.  My method got the speed instantly back to 100 Mbps.

Alternatively, you can simply turn it off using the app's toggle at the top, or get rid of SmartByte altogether, but I often find it's better to get original equipment SW to behave rather than uninstall, which can cause other problems.

In any event, hope this helps Dell users, and I recommend the SpeedGuide TCP Optimizer, regardless of whether you have this particular issue, to explore potential speed tweaks.

Good luck!

Resolved! Thank you for your solution after trying everyone else's potential solutions. It was indeed SmartBytes causing my very slow internet connection 10Mb instead of 200Mb on my Dell Inspiron PC. I tried to adjust settings but could not get the SmartByte interface to come up, only the SmartBytes diagnostics screen. I then removed SmartBytes from my PC using their option on their download new version. I rebooted my PC and now getting over 200Mb download speed. I did not choose to download SmartBytes so do not know how it got on my PC. Thanks again, very much appreciated.

There is a solution for a number of Dell Inspiron users who, sadly, will find no relief from a vexing slow download/normal upload speed issue, despite trying all the great advice on this thread (especially the excellent TPC Optimizer tool at speedguide.net, which is the best way to safely and automatically make helpful registry tweaks).

The issue is the SmartByte application (designed to reserve bandwidth for video streaming in the face of Windows Updates, etc.), which causes issues on a number of Inspiron machines with certain network controllers.   While Dell does have a note on this with advice (https://www.dell.com/support/article/us/en/04/sln309274/smartbyte-application-may-contribute-to-slow-network-performance-and-audio-issues-with-inspiron-systems?lang=en), I found a simpler solution to quickly boost my speed from a crawling 10Mbps to the 100 Mbps I was paying for:

1. Locate and launch the Smartbyte App.  Then you can either turn it off or adjust it to provide full bandwidth, as follows:
2. Click the 'gear' icon in the upper right to launch the Advanced Settings
3. Click the "Manually Set Bandwidth" checkbox, then type your ISP's stated max download speed into the left box, then click 'Save'
4. Note that the "Dynamic Bandwidth" toggle will turn off when you select the 'Manual' setting, and while Dell recommends the dynamic setting as part of their 'solution.' it didn't work for me.  My method got the speed instantly back to 100 Mbps.

Alternatively, you can simply turn it off using the app's toggle at the top, or get rid of SmartByte altogether, but I often find it's better to get original equipment SW to behave rather than uninstall, which can cause other problems.

In any event, hope this helps Dell users, and I recommend the SpeedGuide TCP Optimizer, regardless of whether you have this particular issue, to explore potential speed tweaks.

Good luck!

Solution:

https://www.reddit.com/r/Windows10/comments/ci6no7/slow\_internet\_speeds\_on\_devices\_with\_windows\_10/

Im having the same issue, i even bought a new Ethernet pci e card!!!, its working fine on my windows 7 laptop its this new june update !