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<blockquote data-quote="sjeffrey" data-source="post: 357034" data-attributes="member: 81884">UAC is that annoying popup you get requesting permission in Vista when you do just about anything...Refer to here to find how to turn it off:<a href="http://www.petri.co.il/disable_uac_in_windows_vista.htm" target="_blank">Disable User Account Control in Windows Vista</a>I doubt the processor is your issue.&nbsp; Recordings are in TS format which is not compressed like divx or MKV files are.&nbsp; Compressed video formats are usually what require more CPU power.&nbsp; The problem is that recordings can get pretty big, which in turn means that it needs to write heavily to hard drive.Your bottleneck is probably the harddrive and not the cpu.&nbsp; Perhaps you could record to one drive and watch recordings on a different drive?&nbsp; Of course that would mean that you would need to move your recordings to a 2nd drive once completed but you could do that when your PC is idle.Also could be worth while to see how much CPU is being used when it stutters.&nbsp; It might be that you are not using hardware acceleration.&nbsp; Have you confirmed that HA is used?I also in the process of troubleshooting stuttering issues, but mine are as I change channels and I believe only on HD channels.Stephane</blockquote>

[QUOTE="sjeffrey, post: 357034, member: 81884"] UAC is that annoying popup you get requesting permission in Vista when you do just about anything... Refer to here to find how to turn it off: [url=http://www.petri.co.il/disable_uac_in_windows_vista.htm]Disable User Account Control in Windows Vista[/url] I doubt the processor is your issue. Recordings are in TS format which is not compressed like divx or MKV files are. Compressed video formats are usually what require more CPU power. The problem is that recordings can get pretty big, which in turn means that it needs to write heavily to hard drive. Your bottleneck is probably the harddrive and not the cpu. Perhaps you could record to one drive and watch recordings on a different drive? Of course that would mean that you would need to move your recordings to a 2nd drive once completed but you could do that when your PC is idle. Also could be worth while to see how much CPU is being used when it stutters. It might be that you are not using hardware acceleration. Have you confirmed that HA is used? I also in the process of troubleshooting stuttering issues, but mine are as I change channels and I believe only on HD channels. Stephane [/QUOTE]

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