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SunnyNonsense's avatar
SunnyNonsense
Helpful | Level 5
5 years ago

Desktop App Severely Affecting System Performance

I love Dropbox. I can't say I've messed around with a bunch of different cloud storage services, but Dropbox has been more or less great for me for years. However, recently the desktop application ha...
  • Falonn's avatar
    5 years ago

    This sounds exactly like my issue.  Things are slow because Dropbox is totally thrashing the registry.  Right-clicking on the desktop (or opening the Start Menu) requires checking a few dozen registry entries, but Dropbox's indexing causes a kind of denial-of-service attack on the Windows registry.

    Dropbox support was pretty cool when we started talking offline and we were able to track it down to Windows being the real troublemaker.  When Dropbox checks a file during re-sync, it sends out a request to Windows to update the little icon in the corner (green checkmark, etc.).

    Historically, this was fine.  Maybe(?) after the latest Windows 10 update (that's my guess; the Dropbox team reported they haven't been able to reproduce the behavior), that exact same "hey, Windows, update that file's icon" request now involves checking the registry for four values, which ends up closer to thirty actual registry operations.  Who knows why.  Windows doesn't seem to cache the values, so it repeats the check for every file.  And Dropbox seems to update the whole folder hierarchy's icons each time (despite alleged "deduplicating logic"), so you end up with something close to 150 registry calls per file in your Dropbox!

    No known workaround.

    All we'd need is an "I don't want icon overlays" option in Dropbox and this problem would disappear.  Alternatively: Windows could fix its broken code.

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