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Adobe states that for 64 bit world CS4 is only supported by Vista 64, not XP64. So, you may not get much help.
Ive not noticed that symptom myself; im on vista 64.
Thanks for your replies. So this morning I tested Premiere on XP32 bit and it runs very smooth. So it seems that XP64 bit is the major issue here. It is the one piece of software that seems to not run well at all under the XP64 environment. What a shame.
To Eddie, I'm using version 4.0.0
I am having the same issue with Premiere CS4 on XP64. Choppy lags, even when the timeline is rendered. Working 720P. We are an animation shop that primarily uses 3DS Max, AE, PS, and Premiere, and it made sense for us to go 64Bit for sheer rendering power and memory use. All apps run faster, accept Premiere which is pretty much unusable for all intensive purposes. Very frustrating, do we revert our pipeline because of 1 adobe app? No, we will need to find a new NLE that is supported. A shame really.
>I am having the same issue with Premiere CS4 on XP64
XP64 is not supported.
I'd like to share some of my tweaks that helped get things moving in Premiere CS4 on XP64.
Under preferences, General, Optimize Rendering for Memory.
Use uncompressed AVI's, rather than image sequences.
If using multiple monitors, use a horizontal span across 2 monitors, rather than "Dual View". This enables acceleration across both monitors.
Move Media Cache to different drive than Program installation.
I changed these settings, and I am back to real-time editing HD 720P.
I have been using PP cs4 with XPPro 64bit and not having any problems except for this frustration with cross dissolves not working on my titles. Apparently there is a bug and I need to add a keyframe to the clip to get the cross dissolve to work. I just found out a few min ago that Premiere does not support XP 64 which seems pretty darn stupid to me. Luckily I have not had any other issues. I have finished both HDV and SD projects with no issues...
>I just found out a few min ago that Premiere does not support XP 64 which seems pretty darn stupid to me.
Since Microsoft won't be supporting XP64 going forward (sooner rather than later), it stands to reason that many software companies, including Adobe, are either dropping support as well, or simply not bothering to develop at all for that platform.