Q: Lag in Typing in Yosemite's Mail w/ External Apple Keyboard

I've been experiencing the same problem on my mid-2012 MacBook Pro Retina.  In trying to find the simplest possible configuration, I created a new bootable Yosemite (10.10.1) image on a USB flash drive (instructions found here).  Using the minimum possible amount of customization, I didn't set up an iCloud account, and only configured Mail for my GMail account.  No extra applications were installed.  Turning off spell check as-I-type and save drafts on server made no difference.  The interesting thing about running from the USB drive is that everything is very slow, which makes the lags more prominent and the Mail activity window easier to read.  My plan now is to make a QuickTime screen capture movie showing the Mail composition window, the Mail activity window, and an Activity Monitor window with Mail highlighted.  Hopefully this will capture the essence of the problem.  What I've seen so far is that it looks like it is usually saving the draft message in [GMail/Drafts] when the typing lag occurs.

It can't be restricted to GMail or IMAP accounts because I use neither - both my e-mail accounts are POP.

I put my money on this being a saving drafts issue a few days ago and I'm letting it ride.

Ayup. IT'S BACK WITH ME, TOO. Totally an Apple Mail bug, so never mind my suggestion re check spelling setting.

Hi Kyle,

I'm not familiar with the "rdar" term. Are you talking about a bug report? If so, the one I filed is numbered

19223365

Thank you!

Kirk out

I don't know if it's related but Mail has started inserting random carriage returns whilst I am typing.

Maybe a restart will fix it but I can't shut down at the moment.

Mail has become the most annoying application on my Mac.

anyone have any news about this? any other ideas? it's infuriating, frustrating. and constant, now that it's started.... ugh.

I have a 5K retina display iMac, and an Apple wireless keyboard. I have had this problem since day one and in some way, I'm relieved I'm not the only person struggling with this, but I so agree with you that this is infuriating, and frustrating. I only use Mail, and it makes me not want to reply or write emails.

I hope this gets fixed.

Hi All,

I received the following email from Apple today:

Apple Developer Relations18-Dec-2014 03:13 PM

Engineering has determined that your bug report is a duplicate of another issue and will be closed.  The open or closed status of the original bug report your issue was duplicated to appears in the yellow "Duplicate of XXXXXXXX" section of the bug reporter user interface. This section appears near the top of the right column's bug detail view just under the bug number, title, state, product and rank.

I'm reading this as someone is currently aware of this issue within Apple and it actually has a real bug id (10043747 - listed as "open"). This can't be bad news. Cross your fingers...

Kirk out

i got the same message yesterday. let's hope this leads to a fix...sooner than later. def a weird issue (and hard to pinpoint the cause)...

well, I have this same problem.  Typing into this web form is flying compared to mail.  It's very frustrating because I moved over to mail.app from outlook when Yosemite came out and have been mostly happy.  I also have used airmail and it's like butter typing at full speed.

I wish I had found this post earlier because as a software developer I am good at troubleshooting and had begun systematic testing like others here.  Nothing has helped me, I am still here bugged and slow with lag sometimes lasting 1-2 seconds on a mid 2013 MBP retina.  I do notice mail activity sometimes talking about syncing 30+ messages while I am typing, so I agree, it seems like something wrong with drafts.

Anyone have an update?

yours in mud,

DMA

There are several indications that Apple knows about the problem, and that Mail has been mentioned for testing in 10.10.2.

I'm hoping that will fix the issue. Unlike some problems, this one has the feel of something fixable, if not easily fixable.

also, I have tested and concur that the following do not help:

stop1pasword, stopping Atext, stopping dropbox, turning off spell checking "as i type", making mail not check automatically (5 min interval on IMAP hosts).  Bah.

Yup, that's the one. It sounds like you guys have a duplicate of someone else's bug report so. Radar is apple's bug tracker. It lets people report bugs and see the status of their bugs, but not the status of others.

Basically the email you got is indicating that they are aware of the problem and have marked your bug report as a duplicate of that bug. I don't think it means much more than that. Unfortunately, OpenRadar doesn't seem to have that bug filed so we can't check who filed it or what the state of it is.

Developers got kind tired of wondering this stuff so some of them created OpenRadar. The idea is that you post the bug to Radar, then create a similar one for OpenRadar so that others can see the bug report. Then update OpenRadar as your bug in their system gets updated. This is basically making an open bug tracker for Radar. Using both together helps the community, if someone else runs into a problem they might be able to find it on OpenRadar and duplicate it. In a lot of cases Apple will focus on bugs that have a lot of duplicates so duplicating a bug is one of the many ways to get Apple to look at it.

From that standpoint you have a better shot at someone looking at this particular bug. Hope that helps explain things

ok. JUST updated to the 10.10.2 beta...and no lag in mail (yet). it's been happening consistently since the problem started (about 2 weeks). but 2 long emails just written, and no lag.

am not saying 10.10.2 fixed it...yet. want to give it a few days. but thought i should report what i've observed so far.

will be back with more next few days.... am keeping my fingers crossed (except, of course, when i need them to type)

Tease!

(grin)

Thanks for the update. Something to look forward to - hopefully!

Kirk out