Hmmm cause of this speed drop issue?

[TheBigCheese]

Hi all

I think I know what's causing the problem, but I'd better run it past the knowledgeable types on here!

Basically I have a small network at home...5 PCs, 1 NAS all connected to a Gigabit switch via cat5e into an O2 Wireless V router, a voip is also connected into the router.

The random letters are just so I can identify each machine except for the NAS...which is a NAS.

The problem is when I am trying to transfer files between machines or access the internet the speed is appalling on some machines and often as I'm transferring across the network I lose the network connection entirely and Windows has to repair the connection, it's a nightmare as I'm often moving up to 50GB+ between machines.

I've done some speed tests to show you, all tests were done via Waterfox and all machines are running Windows 64 bit.

On two of the machines below - LUG & JTP it works perfectly all the time no issues at all.

ABC occasionally has problems.

LHM and RHM especially are utter nightmares, constant lost connections, constant slow speeds trying to use the net - trying to download photos takes me back to 56k days!

I've updated the network drivers on RHM to see if that was the problem but it hasn't changed anything.

Screenshot details below....any suggestions are welcomed!

Thanks!

 

[PistolPete]

Have you tried all the usual things like swapping network cables and ports from the fine to the not so fine machines, chipset drivers up to date, no malware etc

At a guess, judging by the similar hardware I reckon fix the problem on one, the rest will fix the same way.

 

[TheBigCheese]

Yes I've changed cables, I've even changed the switch, but as it exhibits on more than one machine I don't think it's a single hardware issue, unless it's a problem with the Asus P5KC motherboard.

One thing I should probably note (don't know whether it's relevant or not), the network hasn't been setup with the homegroups setting of Windows 7, it's just normal shared folders...whether that's helpful or not I don't know!