Internet download speed problem

[Sandi1987]

I don't have max. speed while downloading (HTTP, uTorrent). Virus/trojan or something?

 

[shekyc]

what do you mean by max speed?
it's almost impossible to get the advertised speed, and your download speed depends on the server bandwidth, server load and your bandwidth.
another thing: for example your internet is 100Mbps, you have to divide it by 8 or 10 and it's the actual speed you can get which is 12.5MB/s or 10MB/s

 

[Sandi1987]

I know. I have 2-4 MB/s less download speed as usual.

 

[Ralston18]

What makes and models modems and router (or combination modem/router) do you have? Router's logs (if available and enabled) may provide some clue.

In addition, the modem and router information can help with troubleshooting and the overall physical connections within your network.

For example, if you have a modem/router and a router then the two routers may be both trying to assign IP addresses and the conflicts will slow performance. Common configuration error.

First, contact your ISP and have them check things on their side. Likely to come back with "not us" but you never know...

Then check all of your cables and connections. Ensure all cables are fully and firmly connected.

Ethernet cables - Cat5, Cat5e or better? Coax cables - any splitters (very small metal box, one cable going in, two cables coming out)?

Are you using any wall jacks for coax or ethernet cables. The wall jacks can be quite problematic especially if not properly installed. May work for awhile and then the internal connections loosen up. Only takes one loose wire to cause problems.

Look for signs of physical damage: kinked/bent cables, bare metal showing, nails or staples through cables, something sitting on a cable, rodent chews, corrosion, etc.. Inspect as much of the wiring path as you safely can. No climbing poles or up on roofs. Get help if such actions appear to be necessary.

Work with only one network device at a time. Determine if any devices work at speeds per @shekyc's post.

Find the one device that has the fastest performance and use that device's configuration as a template for other devices.

Change only one thing at a time, keep notes. Sketch out the wiring diagram.

The key is to be methodical and to work using a process of elimination as well as directly identifying some single network component slowing things down.

 

[falling10]

It's better to contact your internet provider.