UI performance in rMBP

Discussion in 'All Things Apple' started by x_kzy_xd, Jun 23, 2012.

  1. x_kzy_xd

    x_kzy_xd Member

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    I've read anand's review and am very concerned by what. He said about the Ji performance given the high resolutions of this notebook. I don't play games or do anything graphics intensive (some very light photoshop at most).

    But the one thing that I do care about is lag. I just can't stand lag when scrolling web pages or moving windows around. I do a lot of multitasking, upwards of 70 tabs open across a number of browser windows, a few word/pages doc, etc. Wll I see UI lag on a 2.6ghz 16gb rMBP?
     
  2. 0roo0roo

    0roo0roo No Lifer

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    generally lag is their first priority, its why apple stuff even with retina had no lag compared to androids infamous lag on lower res.

    kinda doubt two dimensional desktop even at 5mp is hard for todays gpu's, games are ridiculously harder than rendering a desktop now.

    anyways reported system is snappy, esp since the ssd is so fast, and generally desktop "lag" is down to system waiting on harddrives.
     
  3. Subyman

    Subyman Moderator <br> VC&G Forum
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    Did you read the Anandtech article? The rMBP does have issues with drawing that screen size, especially when surfing sites such as facebook.


    From the article:

     
  4. runawayprisoner

    runawayprisoner Platinum Member

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    I had some hands-on time with an rMBP earlier, and I can confirm Anand's findings. The rMBP just feels very laggy compared to my Early 2011 MBP 15" w/ quad-core i7 2.0GHz.
     
  5. x_kzy_xd

    x_kzy_xd Member

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    So the bottleneck is more CPU than GPU?
     
  6. edup

    edup Junior Member

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    as an owner of a RMBP 15 I can tell you guys that this is the worst product I have ever purchased from apple and the worst computer I've ever bought, the lag is crazy while scrolling specially on websites like facebook, twitter etc... and with a tag price of $2,500 this is totally unacceptable

    as a matter of fact we have opened a huge thread on apple forum asking for a fix or something

    https://discussions.apple.com/message/20698656?ac_cid=tw123456#20698656
     
  7. dagamer34

    dagamer34 Platinum Member

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    It ends up being a CPU bottleneck because the GPU wasn't designed to handle such high resolutions. Also, the CPU has to decode images that are 4x in size.
     
  8. JAG87

    JAG87 Diamond Member

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    It is a browser problem, just get the latest webkit build and the scrolling in Safari is super smooth on any website.

    Haven't really noticed any other UI lag, besides a few windows lagging when manually re-sizing them, doesn't really bother me though. The scrolling lag is what was terrible. Hopefully the webkit fix gets pushed into Chrome as well.
     
  9. Kadarin

    Kadarin Lifer

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    I just ordered a 15" rMBP; will update once I get a chance to play with it next week.
     
  10. ubercaffeinated

    ubercaffeinated Platinum Member

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    I've had the rMBP since August, and I haven't had any UI lag that some people have reported. I'm wondering what resolution setting their machines are set on because by default it should be on "scaled best for retina". I've only ever run Mountain Lion on this machine, but it's been a buttery smooth ride for me and I'm pretty intolerant to UI lag.

    I suspect the UI lag can get real bad when the resolution is scaled to the far right - however at the default "scaled best for retina", that just don't happen. Also, my default browser is Chrome, so I don't know how much rendering lag there'd be in Safari - but that'd be a Safari problem and we all know it's a POS browser.
     
  11. Tyranicus

    Tyranicus Senior member

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    I've had a 15" retina MacBook Pro for a couple of weeks now, and I really don't notice lag issues. Others have mentioned lag on Facebook, but I have not seen it. It stutters a little as it loads more posts at the bottom of the page while scrolling, but it did that on my late 2008 MacBook Pro as well.
     
  12. Syrome

    Syrome Member

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    You are 100% correct sir. This issue of UI Scrolling is 100% a Browser Issue. A Webkit build came out about a few weeks ago now and it has totally solved this problem. I ran into the Apple Store myself to test this and for sure my results were reflected accordingly. Facebook, CNN, along with some of my personal blog sites were all sub 30 FPS on scrolling, but with the Webkit build, I am hitting well over 50+ FPS. The CPU is plenty powerful even though it wasn't typically designed for such an increase in resolution and same goes for the GPU. Apple by default overclocked the GT 650M inside the machine at 900 MHZ which is honestly enough to power almost everything you can throw at it besides obvious high end gaming. Granted, Apple could have definitely put a more powerful GPU inside but nonetheless, the 650M is quite capable.
     
  13. JAG87

    JAG87 Diamond Member

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    Of course. Anyone thinking that it's insufficient hardware performance doesn't know what they are talking about. Current hardware has the capability of drawing 2D in both Windows and OSX at FAR higher resolutions than the retina display. And no, the rMBP does not render at twice the resolution and downscale like some forum warriors believe, it just renders at 2x the DPI. The scaling only kicks in if you are using a resolution other than 2880x1800, and even then rendering performance is barely affected. So yea the internet scrolling lag is a browser problem, not a hardware problem.
     
  14. Kadarin

    Kadarin Lifer

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    Just got my rMBP today; no lag issues of any sort here that I've noticed so far.