I am loosing an Audio frame, which gives an "audible micro stutter".
I have this problem too In my case I'm pretty certain that it's caused by IRQ-sharing, more specifically the APIC-setting in the BIOS. I run Vista with three DVB-S tuners. When I first installed MediaPortal, the stuttering in live-TV would get worse when I was recording from another channel. That made me suspect it was an IRQ-sharing problem, so I switched to the other LAN-port on my mainboard and the problem was drastically reduced! Now it only happens once every other minute. I don't know which component is the sensitive/troublemaking one, whether it's the LAN-card, graphics-card, sound-card or the hdd-controller.
I think this might be the cause for some of the others here as well. A giveaway is that your computer is powerful enough to playback HD-movies, but it stutters in live-TV, which uses more components and demands more from the IRQ-system.
APIC is the work of the devil. It has caused trouble for me earlier as well, and after countless hours of troubleshooting, it's always the very last thing I try since the OS isn't reporting any problems. Unfortunately if you disable this setting, you have to reinstall the OS, and I read that for multicore-CPUs it must be enabled. Tomorrow I will install Win7 with APIC disabled, since I read that a guy still had multicore-support with APIC disabled. If anyone knows for sure that you need APIC enabled for multicore-support, please tell me so I will save some time
@Tourettes DPC shows well below green line.
I will now also try to replace my cable diverter (need to check its through attenuation first and see if I get one with lower) as this is the only other thing between my provider NT and the DE card, despite 3 Meters of coax cable...
Will do tonight. I shall revert afterwards.Please try with one DVB card only, directly from the wall.
I have this problem too In my case I'm pretty certain that it's caused by IRQ-sharing, more specifically the APIC-setting in the BIOS. I run Vista with three DVB-S tuners. When I first installed MediaPortal, the stuttering in live-TV would get worse when I was recording from another channel. That made me suspect it was an IRQ-sharing problem, so I switched to the other LAN-port on my mainboard and the problem was drastically reduced! Now it only happens once every other minute. I don't know which component is the sensitive/troublemaking one, whether it's the LAN-card, graphics-card, sound-card or the hdd-controller.
I think this might be the cause for some of the others here as well. A giveaway is that your computer is powerful enough to playback HD-movies, but it stutters in live-TV, which uses more components and demands more from the IRQ-system.
APIC is the work of the devil. It has caused trouble for me earlier as well, and after countless hours of troubleshooting, it's always the very last thing I try since the OS isn't reporting any problems. Unfortunately if you disable this setting, you have to reinstall the OS, and I read that for multicore-CPUs it must be enabled. Tomorrow I will install Win7 with APIC disabled, since I read that a guy still had multicore-support with APIC disabled. If anyone knows for sure that you need APIC enabled for multicore-support, please tell me so I will save some time
DPC Latency Checker