Desktop PC - Bandwidth slow down

Mike1983

Mike1983

Mike1983

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Joined
16 Nov 2007
Posts
811
Hi all

A bit of a strange problem has just arisen thre past few days and I was wondering if anyone else has seen this / knows the fix?

My desktop PC running Windows 10 and standard motherboard Intel LAN NIC (I217-V) was previously getting a consistent full 1Gb transfer speed to my server (approx 110MB/s file transfer). The past fe days, this has dropped to what appears to be just 100Mb speed (approx 12MB/s transfer).

This slow down has also been verfied on my backup server.

I have run a tranfer from my primary server to my backup server and this achieves a full 1Gb (110MB/s) transfer rate. In other words, it is localised to my desktop.

My NIC shows a full 1Gb connection in properties, likewise my switch shows it connected at 1Gb too. I've installed the latest drivers too but no joy.

Anyone any ideas?

Thank you

Mike
 
Thanks for the reply.

All devices show a full 1Gb connection.

After further testing, it looks like the slowdown occurs consistently after 2minutes of login. Logging off / switching users does not reset the issue, a reboot does.

Additionally, when the issue occurs, websites do not seem to load consistently properly.

The first 2 mins of logging in seem absolutely fine.

Any ideas of how I can track down what is triggering this after 2mins? Virus scan shows all clear, never had a virus in my life so I'm hopeful it is not attributed to that.

Thank you

Mike
 
Ran task manager and watched whilst the 2minute bandwidth drop kicked in.

A task called "winshellservice" kicks in after 2mins and seems to cause the issue. Ending the task restores normality. Strange....

Mike
 
Install Process Explorer, this will tell you where this exe is. A quick Google doesn't sound too good..

Run eset nod32 online scanner for good measure..
 
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