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iMac 5K Graphic Shuttering Issue

Hmm, if this is a common issue I would expect it wo be a firmware fix for it pretty soon

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The Doctor11 said:
Doesn't matter youtube is only 30 FPS
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Man, its still slow mo :) 120fps converted to 30 fps will still hold the same speedrate.
 
Georgio said:
It's going to need a bit more than a firmware fix... ;)
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I would think that if it happens some times, not always, it has to be something thats possible to fix with code. But, of course if it happens every time, then its more worrysome
 
Have you tried it with a different webpage? Try the Google homepage, I'm thinking it may have something to do with the Flash videos on Youtube.

Also does this happen with other applications, or just Safari?
 
Well there will be arguments about the 5K display being too much for the GPU, but it honestly seems like OS optimization issues. I've had a UI buts and occasional graphic issues on my rMBP since updating to Yosemite.
 
GUYS! Problem solved!

The problem has to be related to my user account. Once I have created and log into a brand new account. It is as smooth as silk. For now. Will keep you guys updated.
 
lscangus said:
GUYS! Problem solved!

The problem has to be related to my user account. Once I have created and log into a brand new account. It is as smooth as silk. For now. Will keep you guys updated.
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For everyone I know who has tried that it went right back to doing it after a short while.
 
jji7skyline said:
Return it and see if a new one helps.
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If its the m290x they all do it. I've been through 3 everyone had the problem. I talked to a genius at my local store and he said he's seen quite a few come back with the issue.
 
dlewis23 said:
If its the m290x they all do it. I've been through 3 everyone had the problem. I talked to a genius at my local store and he said he's seen quite a few come back with the issue.
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Hi YouTube video is captioned "I7 with upgrade GPU".
 
Is it normal when scrolling through a web page, theres a bit of lag/hesitation. Basically the page doesnt scroll smoothly especially when first entering a new page.
 
dlewis23 said:
If its the m290x they all do it. I've been through 3 everyone had the problem. I talked to a genius at my local store and he said he's seen quite a few come back with the issue.
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With all the pixels in this display, that's why I chose the highest GPU option (m295x). Even so, it's not the fastest display. But it is very crisp and clear.
 
My off-the-cuff guess would be a driver issue - that type of graphic tearing is usually driver related. With the newness of such ultra-high resolution, it wouldn't surprise me if there are a few learning curve glitches that take a few patches over the next couple months to sort out.

(I'm waiting for my annual bonus, then I'll be getting the same i7+M295X model. Still debating on if I want to go through the effort of opening and upgrading the hard drive myself to something bigger than 3 TB (and rebuild the Fusion array,) or if I'll just make do with external storage.)
 
lscangus said:
anyone has similar issue?
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Well, I grabbed my iPhone and steeled myself for the bad news, thinking I might possibly have missed it, but I could not reproduce this issue (i5/M290X).

With constant wiggling back and forth of the youtube page I just got the occasional (once every 5 seconds) appearance of strobing/tearing right along the right edge of the window, like a frame drop. I don't think I would ever have noticed it myself. Nothing like the inside the window repeatedly filling in piecemeal, that's pretty severe in my opinion.

sorry man, I think it's going to have to be repaired.
 
lscangus said:
https://www.youtube.com/watch?v=yS7l8E5Rpd4&list=UU0h9FEjQ0lCFnusSzlPZOeg

I have bought the iMac 5k. But I have noticed sometimes there are graphic shuttering when rendering the interface. Please have a look at the video and see if anyone has similar issue.

PS. Video was a 120FPS Slow-mo

A
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ugh... that looks terrible. I don't have this problem on my i7/m295X. Even with Mission Control which has been an issue with my rMBP before.

Good that a user reset fixed it for you. Hopefully it won't come back. But I think an AppleCare is needed... just in case.

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5iMacs said:
Well, I grabbed my iPhone and steeled myself for the bad news, thinking I might possibly have missed it, but I could not reproduce this issue (i5/M290X).

With constant wiggling back and forth of the youtube page I just got the occasional (once every 5 seconds) appearance of strobing/tearing right along the right edge of the window, like a frame drop. I don't think I would ever have noticed it myself. Nothing like the inside the window repeatedly filling in piecemeal, that's pretty severe in my opinion.

sorry man, I think it's going to have to be repaired.
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I tried it just now on the rMBP to see if I can induce a similar effect. Nothing. This is a 1st-gen base 2012 rMBP (yes, the one that many people have issues with)

Will you try replacing or upgrading your 5K cos of this?
 
habeebhashim said:
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I tried it just now on the rMBP to see if I can induce a similar effect. Nothing. This is a 1st-gen base 2012 rMBP (yes, the one that many people have issues with)

Will you try replacing or upgrading your 5K cos of this?
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Oh, no, that's not what I meant. :eek: I was making a suggestion to lscangus to repair his.

This glitch of an occasional dropped frame is so minor I would never think about it again.

We're talking about .5cm strip of tearing right at the edge of the window, only after much contrived wiggling.
 
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