Q: Annoying slowness of Preview after Yosemite upgrade

+1

Clear difference with Yosemite. I keep a lot of large electronics pdf datasheets and schematics open at any given time. Some I used routinely in in Mavericks are now unusable.

Not just a performance issue, some large schematics render in a hit or miss manner: most of the time they render as meaningless visual gibberish such as black boxes, dots, and visual screen fragments from other applications.

Can anyone who is running the latest beta (10.10.1) give us an update? Have Apple addressed the problem with PDFs? I just want to know that they are at least aware of it and working on a fix.

Does it get better if you switch to fullscreen mode?

Maybe it's an issue caused by Yosemite's tranparency effect, I noticed the same behaviour mainly in Firefox, disabling the transparencies made it much better.

Simple head over to the Apple Menu -> System Preferences -> Accessibility -> Display -> Check the box that says Reduce Transparency.

good thought roto,

I've tried it in fullscreen and it seems the bad rendering effect improves, though it is still bad.

Note I already had transparency disabled as since Yosemite, for the first time ever, I've felt my quad-core macbook pro underperform under normal operation (laggy desktop transitions, fullscreen effects).

No.

Anyone running the beta needs to agree to a non-disclosure agreement; and we are not allowed to discuss beta software here. The hosts regularly remove such posts.

Apple's NDA, which is not legally binding in any case, prohibits developers from discussing undisclosed features in betas. It does not prohibit discussion of bug fixes for features that are already public knowledge. A point release is unlikely to contain ultra secret new features -- I just want to know if the complete disruption of my workflow is going to be fixed any time soon. Thanks for taking the time to reply though.

I have the same problem too. Some other apps  sometimes froze or become slow.

Arguing about what is legally binding or allowed here is superfluous. This site is owned by Apple and we are not allowed to discuss beta software here; the hosts regularly remove such posts.

Just updated to 10.10.1 sadly they did´t fix the issue, lame. Apple is going down after Steve left.

Same here, just updated and still these dense PDFs are slow to scroll.

I read this bug was reported by beta-testers back in summer, before Yosemite shipped. Nothing happened. I guess Apple is more interested in making shiny watches these days…

My solution for the moment: use Quick Look to read PDFs -> in the Finder, click on the file and then press [space]. You can make the window full screen and zoom with pinch to zoom. For me that works perfectly, but of course you cannot annotate the PDF this way.

"angry birds" and "cut the rope" are working perfectly on Yosemite hence apple has made a great job

i cannot read my medical pdf files however apple has different priorities due to the fact that MacBooks are professional tools...

i have tried preview 7 on yosemite however i have the same issue

when i open large pdf files i run out of ram(10 mb available) and preview stops responding

my retina macbook has 8gb ram and 256 gb hdd late 2012

KirkCoo's post seems to have fixed it for me. Although still not as fast or smooth as it was in Mavericks, Preview is now usable; scrolling is smooth and pages display more or less straight away. Thanks!

i fixed the issue returning to mavericks

the issue was only with large pdf files over 400 mb.i had no issue with small pdf files

with mavericks i cannot use iCloud drive and my iPhone cannot connect with retina MBP

i have decreased my storage plan from 200 to 20 gb because i cannot use this extra gb without cloud drive.Dropbox is still working.Thanks god dropbox is not developed from apple

i liked yosemite however i must read my medical pdf files (some pdf files are more than 1,5 gb)

i am going to wait for this issue to be solved and then install yosemite.

With mavericks i never had issue with pdf files even with some pdf files larger than 3 gb(i merged some medical pdf books and created a large pdf file) preview and search are super fast!

i am disappointed nevertheless i hope that apple will address this issue.

Actually, it seems to have slowed way down again and become jerky - although only with certain types of PDFs (I think it may be PDFs that originate from scanned material). Sigh.