# File Copy over Network is much slower than Explorer - Win7

**URL:** https://resource.dopus.com/t/file-copy-over-network-is-much-slower-than-explorer-win7/11361
**Category:** Help & Support
**Created:** [July 4, 2011, 11:56pm UTC](https://resource.dopus.com/t/file-copy-over-network-is-much-slower-than-explorer-win7/11361 "2011-07-04T23:56:44Z")
**Posts on this page:** 1
**Showing post:** 23

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### Author: ![Leo](https://resource.dopus.com/user_avatar/resource.dopus.com/leo/32/69732_2.png) [@Leo](https://resource.dopus.com/u/Leo)
#### Post date: [July 31, 2011, 8:59am UTC](https://resource.dopus.com/t/file-copy-over-network-is-much-slower-than-explorer-win7/11361/23 "2011-07-31T08:59:09Z")

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> [@Paul](#):
>
> I have to agree with the other posters, file transfers are much slower than Opus v9.x. In fact I've un-installed v10 and gone back to v9.x because of a number of problems that appear to be attributable to v10.

I don't think anybody has mentioned Opus 9 until now in the thread. People are talking about Explorer vs Opus, as far as I can tell.

That's also strange since the way Opus copies files didn't change between Opus 9 and Opus 10. A lot of other things have changed, but not that.

Maybe one of those 9-\>10 changes has triggered a problem on your setup. (e.g. Some graphics/motherboard drivers are really sensitive to the way progress dialogs are updated, in my experience. It can be quite random things like that. Or it can be more obvious things like antivirus or firewall software that works using signatures and sees two versions of Opus (or whatever) as different, and treats them differently.)

> [@](#):
>
> When v10 is transferring a lot of files over the network, the rest of Opus's UI is very unresponsive for one thing.

If that is due to high CPU usage, Process Explorer may be able to indicate what is using the CPU.

- Run Process Explorer as admin.
- Find the process using lots of CPU (it may be dopus.exe or it could be "System" if the problem is happening within the network filesystem driver; it could also be a firewall/anti-virus/etc. process).
- Open that process's properties, then go to the Threads tab.
- Sort the threads by CPU. There's probably one thread responsible for almost all of it. Select that thread.
- Click the Stack button and see which components are listed. The non-Windows ones nearest the top are usually responsible, and if they are not Opus components then you may have your culprit.

(See [W0lfdale's suggestion in an old thread](https://resource.dopus.com/t/slow-response-on-all-listers/4606/3) for an alternative description of what to do, with screenshot. That's linked from [the general troubleshooting FAQ](https://resource.dopus.com/t/general-slowdown-or-instability-investigation-steps/4618/1) which may have other things worth trying.)

> [@](#):
>
> Another, I've just tried using the latest v10 beta 10.0.1.4 i think it was, had to uninstall this because of peculiar mouse click behaviour that wasn't occurring before installation.

Have you reported that problem anywhere? It can't be explained/fixed unless it's reported, and it doesn't sound related to this thread.

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