Q: Slow loading Finder in Mavericks?

I think if you replace Wi-Fi with Ethernet, it should work - the Wi-Fi is referring to the Service name in the Network prefs.  See if that works.  I'm trying to figure out a way for my Thunderbolt Ethernet as it's not reading correctly

I've done that just now, Bryan.  It worked, and IPv6 is now listed as "Off" for my Ethernet connection. 

No change however, when I open a new Finder window, it still takes 15-20 seconds for the window to populate (Application icons, etc.)

I rebooted, verifed that IPv6 was still off, and tried the Finder again, with the same delay.  Internet connection still sluggish and prone to slow loading & stalls, and just general sluggish/slow behavior - sometimes I'll have to click an app twice in the dock to launch it, etc.  Symptoms persist. 

Yep, that works. I was able to change my Thunderbolt-Ethernet service to Off.

Is your Wi-Fi service turned off?  If not, turn it off and even if it is, change it's settings as well.  Just in case.

Wi-Fi is off.  But I'll try it as well.  Couldn't hurt at this point.  BRB.

No change with IPv6 turned off for both Wi-Fi and Ethernet.    Symptoms persist.  Did it work for you?

Yeah so far, but I'm gonna give it a few days to see if anything changes.  It's obviously not a fully working solution if it doesn't solve for us both.

Thank you blurped,

running this in the terminal worked perfectly

sudo defaults write com.apple.Finder NSAppSleepDisabled -bool YES

I agree this seems to be a bug in finder.   Part of the finder slowness may be due to

finding things in Mail.   Now I'm seeing mail items when searching my computer for files.

Is there any way to tell 'finder' NOT to search Mail?

You can check Mail off in the Spotlight preferences. "Email and messages".

Unfortunately, this is a very coarse on/off switch. I would prefer having separate switches for:

- e-mail bodies

- e-mail attachments      (I'd switch off)

- instant messages

On my system, I suspect the problems to be connected to spotlight. But I'm not able to iron them completely out. Switching Spotlight off for mail altogether (i.e. no search within mailboxes, even within Mail app) is simply too much to ask.

Good luck!!

Bryan,

I started to encounter this problem only after the installation of my NAS. Hope that you could suggest this to engineering. Thank you.

I seem to have same prolbem after installing NAS also, Synology in particular BUT this is odd....

Finder is slower on late 2012 iMac with 16G RAM and 3TB fusion drive...could this be due to drive.

My late 2007 iMac has faster Finder and only 4G RAM.  Do not understand this.  Tried all solutions above and they did help BUT still slow FInder. 

The 10.9.2 update has fixed my Finder Quick Look problems.

I want to say that I'm cautiously optimistic that the 10.9.2 update has solved my problems as well. 

Also running a Synology. Don't know that I can tie it to that, unless Cloudstation is doing something.

As khunsanook suggested, maybe something to do with Quick Look. The other day, I noticed that when Finder was stalling, I happened to be resizing a window. The preview icon was stuttering all over the place.

Downloading 10.9.2 right now and will see what happens.