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<blockquote data-quote="RoChess" data-source="post: 1031369" data-attributes="member: 18896">E350 = 2 parts&nbsp;Part #1 = super fast GPU, infact it is capable of decoding 2x 1080p streamsPart #2 = weak CPU&nbsp;The problem is that for the GPU to work, it relies on the CPU to feed it with the data it needs. The CPU in turn relies on the harddisk+controller or network-storage+network-controller to obtain the data. The higher the amount of data that needs to be transferred, the bigger the risk of stutter caused by interrupts, especially if any of the parts inbetween has issues (weakest link breaks the chain).&nbsp;Another problem is that the CPU is also required a lot to help with making sense of the video. For Blu-Ray for example it has to decode the security part, and any software based decoder also puts an additional load on the CPU. That is why even a super fast CPU fails if you try to software decode a high-bitrate 1080p video. This is why DXVA is so popular, because it offloads all the video decoding onto the GPU where it belongs and which the E350 can do easaly.&nbsp;The problem you got now is that the 'updated' versions of MediaPortal, Moving-Pictures and/or MP-TVSeries are adding just enough additional load onto the CPU or extra interruptions that the CPU is unable to keep up with the GPU need for a constant feed of data to keep the video from stuttering. It might not even be the CPU itself, but the BIOS, driver or software configuration. Use the following tool for example to check if your mainboard and/or a driver is causing latency issues:&nbsp;<a href="http://www.thesycon.de/deu/latency_check.shtml" target="_blank">http://www.thesycon.de/deu/latency_check.shtml</a>&nbsp;I have fixed weird stutter problems by fixing the underlying latency issues first. In one case it meant replacing the mainboard, because it was a design flaw by the manufactor.</blockquote>

[QUOTE="RoChess, post: 1031369, member: 18896"] E350 = 2 parts Part #1 = super fast GPU, infact it is capable of decoding 2x 1080p streams Part #2 = weak CPU The problem is that for the GPU to work, it relies on the CPU to feed it with the data it needs. The CPU in turn relies on the harddisk+controller or network-storage+network-controller to obtain the data. The higher the amount of data that needs to be transferred, the bigger the risk of stutter caused by interrupts, especially if any of the parts inbetween has issues (weakest link breaks the chain). Another problem is that the CPU is also required a lot to help with making sense of the video. For Blu-Ray for example it has to decode the security part, and any software based decoder also puts an additional load on the CPU. That is why even a super fast CPU fails if you try to software decode a high-bitrate 1080p video. This is why DXVA is so popular, because it offloads all the video decoding onto the GPU where it belongs and which the E350 can do easaly. The problem you got now is that the 'updated' versions of MediaPortal, Moving-Pictures and/or MP-TVSeries are adding just enough additional load onto the CPU or extra interruptions that the CPU is unable to keep up with the GPU need for a constant feed of data to keep the video from stuttering. It might not even be the CPU itself, but the BIOS, driver or software configuration. Use the following tool for example to check if your mainboard and/or a driver is causing latency issues: [URL='http://www.thesycon.de/deu/latency_check.shtml'][B]http://www.thesycon.de/deu/latency_check.shtml[/B][/URL] I have fixed weird stutter problems by fixing the underlying latency issues first. In one case it meant replacing the mainboard, because it was a design flaw by the manufactor. [/QUOTE]

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