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<blockquote data-quote="logifuse" data-source="post: 821109" data-attributes="member: 110442">I've just set up an <a href="http://www.arctic.ac/en/p/living/entertainment-center.html" target="_blank">Arctic Entertainment</a> passively cooled PC as my bedroom HTPC &amp; it's my first foray in to the ATI world for quite a long time (it has a Mobility Radeon HD5430).Setup was simple enough, all up &amp; running connecting to my TV server(4TR/Argus), but I've struck an issue that I haven't really seen on my Nvidia GPUs. When the Nvidias are running at 50Hz, TV is nice &amp; smooth (various MPEG2 channels of 576i, 720p &amp; 1440x1080i) using either LAV CUVID or the MS decoder, &amp; the OSD (shift 1) shows a pretty straight red line &amp; a measured refresh rate of about 50.001XX.On the ATI, video isn't quite as smooth (various decoders &amp; CCC settings make no difference) &amp; the OSD measured refresh rate is around 50.007XX with a very rough red line &amp; the occasional dropped frame. I've tried various driver versions (11.12, 11.4) &amp; different decoders, experimental TSReaders &amp; DShowhelpers &amp; nothing really makes much difference.The system is very responsive with an SSD &amp; Windows 7 64 bit SP1 (all up to date), nothing's maxing out, &amp; I'm outputting 720p@50Hz with a slight resize (sorry, not exactly sure what ATI call that).The story is pretty similar when watching 23.976FPS material at 59.94Hz. On Nvidia the graph would show a nice 2:3 pull up happening, on the ATI it's a much rougher graph &amp; playback is noticeably not as smooth.ATI folks, what's the story with your configurations? Flat red lines, or rough ripples?Thanks!</blockquote>

[QUOTE="logifuse, post: 821109, member: 110442"] I've just set up an [URL="http://www.arctic.ac/en/p/living/entertainment-center.html"]Arctic Entertainment[/URL] passively cooled PC as my bedroom HTPC & it's my first foray in to the ATI world for quite a long time (it has a Mobility Radeon HD5430). Setup was simple enough, all up & running connecting to my TV server(4TR/Argus), but I've struck an issue that I haven't really seen on my Nvidia GPUs. When the Nvidias are running at 50Hz, TV is nice & smooth (various MPEG2 channels of 576i, 720p & 1440x1080i) using either LAV CUVID or the MS decoder, & the OSD (shift 1) shows a pretty straight red line & a measured refresh rate of about 50.001XX. On the ATI, video isn't quite as smooth (various decoders & CCC settings make no difference) & the OSD measured refresh rate is around 50.007XX with a very rough red line & the occasional dropped frame. I've tried various driver versions (11.12, 11.4) & different decoders, experimental TSReaders & DShowhelpers & nothing really makes much difference. The system is very responsive with an SSD & Windows 7 64 bit SP1 (all up to date), nothing's maxing out, & I'm outputting 720p@50Hz with a slight resize (sorry, not exactly sure what ATI call that). The story is pretty similar when watching 23.976FPS material at 59.94Hz. On Nvidia the graph would show a nice 2:3 pull up happening, on the ATI it's a much rougher graph & playback is noticeably not as smooth. ATI folks, what's the story with your configurations? Flat red lines, or rough ripples? Thanks! [/QUOTE]

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