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Message: <blockquote data-quote="edterbak" data-source="post: 627082" data-attributes="member: 69192">Hi all,I have been trying numerous combinations to get propper playback. I am (as it seems) unable to get smooth playback, but also after 10+ minutes with various mediafiles avi/mkv files. Especially with HDTV (1080i) I am having a lot of issues. First 4 seconds of HDTV are smooth and fine... then the judder starts. I am running Win7 x64; GPU is a HD4350; CPU is AMD BE-2350 (2.1ghz dualcore). The HD4350 is capable of dxva 2 and deinterlacing up to adaptive (I can select vector adaptive and it works IMO, but some people doubt it will actually do it). At first I was steared to think the limit of the card is causing these issues. but the more I look at it, I am starting to believe it is not. If I disable Aero I have a perfect picture, up untill some tearing starts to occur after 30-180 seconds. This is ofcourse due to the lack of aero v-sync correction. CPU load is 25-40% and GPU load is 55% with weave de-interlacing and 75-80% with vector-adaptive de-interlacing set in ATI CCC. If I press SHIFT+1 I see actual framerate (red line) of 50fps, like it should. No HW bottleneck IMO.If I enable Aero I have 4-6 seconds of perfect picture. After that I see one or two constant framedrop(s) each second. CPU load is still 25-40% and GPU load is 55% with weave de-interlacing and 85% with vector-adaptive de-interlacing. There seems to be no significant load increase to cause judder. Especially if I look at the weave de-interlacing load on the GPU (55%) which should give a good picture. When pressing SHIFT+1 I always see a actual framerate (red line) which drifts between 25-45fps while it should be 50. windows framerate is 50. I do see some improvements if I switch dshowhelper.dll. Original: good playback on normal mediafiles; HDTV judder like crazy V1+2+4: good playback on normal mediafiles (a rare judder); HDTV judder slightly less but still very unacceptable.v10+11: sometimes judders on normal mediafiles; HDTV judder even slightly less compared to v1/2/4, can apear smooth at times, but it is still not accepable / watchable.What have I tried:-Inside ATI CCC;   V-sync always on/off, force smooth playback, de-interlacing weave/bob/>/vectoradaptive. -Codecs; like SAF4/5, Powerdvd 9/10 with DXVA, FFDShow video DXVA, MPC-HC, ATI AVIVO... -Tried ATI catalyst 10.3/10.4/10.5 and now I use 10.6beta2. -I have played with reclock as well. The audio output I use is analogue, with ASUS Xonar to convert on the fly to DTS Live. -Inside MP; dont drop late frames, different timeshifting modes, different timeshifting locations (now on SSD)Best playback results I get with Powerdvd 9/10 with the use of dxva. ATI catalyst 10.6beta2 seems to work best in Win7/MP, but no change on judder.I have a recording of a channel (Nederland 1 HD - MPEG2 1080i) and it plays fine outside MP in Graphstudio/MPC-HC. Inside MP not. Some other HD channels show a LOT less judder than Ned1 HD. Some are even smooth for 99% of the time, but these might be 480/720p or something (didnt check). So I am inclined to believe there is an other issue at hand here than a hardware limitation. Or atleast, I dont see a CPU/GPU bottleneck during playback especially forcing weave de-interlacing. I would like to know what your thoughts are about this. Is it dshowhelper related? Settings ATI CCC related. Also, If you like to see more detailed logs can you tell me what actions you'd like me to show. I would like to squash this thing which is bugging me for a while now. How do I go about this best? Please advice.Kind regards,</blockquote>

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