HTPC Itunes stuttering

Ross

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Hi,

Hopefully someone can help me solve an issue I am having with my HTPC. I have exhausted Apple support (well their support may as well have been "have you tried turning it off and on again
wink.gif
).

When I play iTunes purchased content (TV Season passes) on my HTPC at 1080p @ 60hz, the video stutters like mad. If I play the same content via Quicktime, there is no stuttering. If I drop the resolution down to 1080p @ 24hz (using the ATI software), video no longer stutters in iTunes, but I get flickers on the screen when changing windows or when a page loads.

If I play HD content using my BD drive or XBMC, I get absolutely no stuttering and it plays flawlessly at 1080p @ 60hz.

I've even tried different brands of TV, as there were issues with the Apple TV on Samsung TV's. I borrowed an LG LCD and the same as the above mentioned (stutter at 1080p @ 60hz, no stutter @ 24hz).

My HTPC specs are:

Intel Core i3 2120
Asus P8H67-M PRO Rev.3.0
Seasonic X-400FL 460W ATX Fanless PSU
Corsair XMS3 Desktop Memory 8GB (2 x 4GB)
Crucial M4 64gb
Samsung F4 2TB HDD
Sapphire HD6670 1GB Ultimate Graphics Card

Does anyone have any ideas on how to rectify this?

Thanks in advance.

Regards,

Ross
 

My Computer

Computer Manufacturer/Model Number
Custom / Laptop - Dell Studio 1558
OS
Windows 7 Professional / Windows 7 Professional
CPU
Intel Core i7-2600K 3.40GHz / Intel Core i7 720QM
Motherboard
Asus P67 Sabertooth **B3 Revision**
Memory
16GB Kingston HyperX XMP 1600MHz / 8GB Samsung DDR3 1333mhz
Graphics Card(s)
MSI ATI Radeon HD6870 1GB Twin Frozr III / Ati Radeon HD5450
Sound Card
Onboard 5.1
Monitor(s) Displays
Dell 24" FULL HD LED / Full HD WLED 15.4"
Screen Resolution
1920 x 1080 / 1920 x 1080
Hard Drives
Crucial C300 + 4 x Samsung F3 1TB + 2 x External WD 1TB 7200RPM / OCZ Vertex 2e 240gb + External WD 500GB 7200RPM
PSU
Corsair TX 750W
Case
Fractal Design Define XL Full Tower Case - Black Pearl
Cooling
2 x Fractal 120mm and 2 x Fractal 80mm Fans
Keyboard
Microsoft Digital Media Pro / Backlit
Mouse
Logitech MX Revolution / Logitech VX Revolution
Internet Speed
Sky Unlimited 20mb
Other Info
Samsung Blu-Ray Player and Billion 7800N Router
Try reinstalling itunes and the graphics card driers. This happened to me a few weeks ago, and I fixed it using that
 

My Computer

OS
Win 7 Ultimate x64
Thanks for the reply.

Unfortunately I have tried removing iTunes and ATI CC, then rebooting and then running CCleaner and reinstalling, but the issue still stands.
 

My Computer

Computer Manufacturer/Model Number
Custom / Laptop - Dell Studio 1558
OS
Windows 7 Professional / Windows 7 Professional
CPU
Intel Core i7-2600K 3.40GHz / Intel Core i7 720QM
Motherboard
Asus P67 Sabertooth **B3 Revision**
Memory
16GB Kingston HyperX XMP 1600MHz / 8GB Samsung DDR3 1333mhz
Graphics Card(s)
MSI ATI Radeon HD6870 1GB Twin Frozr III / Ati Radeon HD5450
Sound Card
Onboard 5.1
Monitor(s) Displays
Dell 24" FULL HD LED / Full HD WLED 15.4"
Screen Resolution
1920 x 1080 / 1920 x 1080
Hard Drives
Crucial C300 + 4 x Samsung F3 1TB + 2 x External WD 1TB 7200RPM / OCZ Vertex 2e 240gb + External WD 500GB 7200RPM
PSU
Corsair TX 750W
Case
Fractal Design Define XL Full Tower Case - Black Pearl
Cooling
2 x Fractal 120mm and 2 x Fractal 80mm Fans
Keyboard
Microsoft Digital Media Pro / Backlit
Mouse
Logitech MX Revolution / Logitech VX Revolution
Internet Speed
Sky Unlimited 20mb
Other Info
Samsung Blu-Ray Player and Billion 7800N Router
This must be a software related issue/glitch, because a core i3 with a video card like yours is more than enough to handle 1080p video.
 

My Computer

OS
Win 7 Ultimate x64
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