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Comment by erwan577 | Hacker News Reader

The first step to solve a problem is to measure it. Do you know of a windows program that can measure the latency of the UI of other windows apps ?

What really drives me mad is the latency of some file selection dialogs for example which can take like 10 seconds.

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Some file selection dialog (and explorer) issues come down to the anti-virus. I've had folders on an SSD that took a minute (60 seconds!) to load. After I added it to an exclusion list in Defender it loaded in a second.

Another one that can be slow with file dialogs is that sometimes (maybe it has been fixed now) it will try to query whether a networked drive is around on another computer. If it isn't then the call to it can be blocking your file UI.

A third problem I've noticed with file selection dialogs and explorer is that the My Computer 'folder' that contains your disks takes a long time to load. Much longer than any sub-folders on any of the drives.

I think the problem is largely with explorer.exe. If I browse those folders in a web browser the experience is snappy.

You can get lots of good information from ETW https://learn.microsoft.com/en-us/windows-hardware/drivers/d...

There's also Dtrace https://learn.microsoft.com/en-us/windows-hardware/drivers/d...

> What really drives me mad is the latency of some file selection dialogs for example which can take like 10 seconds.

That's why the obfuscated it and now it takes 30 seconds. (Win 10). Unless you want to save on OneDrive.

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