first of all please note I have been editing for decades and was among the very first to use NLEs in the days of AVID (more than 20 years ago) - suffice to say I was there and saw it when Premiere came out at v. 1.0. (yes, I am that old)
All this to say that you do not need to address basic issues as I know my stuff - also please no obvious comments on my setup: I know it is on the weak side but I have reasons for the equipment I have. Which consists of PP 5.5.2 running on a Win Vista 64 with an Athlon II X4 645 (O/C to 3.4GHz), 8GB RAM and U320 scsi disks (with cache and previews on a third disk) with an nVidia GTX260 and GT240. Main monitor is an LCD on GTX260 with playback fullscreen on a broadcast CRT via S-Video from the GTX 260. The idea was that I figured CUDA would take care of scaling down and re-interlacing HD video for playback on the PAL monitor.
I work with AVCHD (50i, full HD @ 17Mbs) and of course I have the Mercury GPU enabled (ehm...), had it all setup to go dreaming yet much to my dismay I noticed PP is struggling to play video smoothly, especially when the PAL monitor is involved.
1) AVCHD playback on the computer monitor is OK (struggles a bit sometimes but generally allright), however scrubbing video is a pain, slow and erratic, missed frames, slow etc.;
2) playback on TV is CHOPPY, I'd say I am getting 12-18fps (basically it seems to skip one every two or three frames, the motion isn't fluid at all)
3) I get the yellow bar on the timeline (except for dissolves and effects where it's green - at least my GPU is working)
4) I can tell the TV monitor has some kind of de-flickering applied by the nVidia driver but I just can't find a way to switch it off, and I think that's causing problems since Premiere identifies the TV as 720x576p when really it should be a 720x576i - actually it should be 768x576 because it's analogue, but go and tell nVidia engineers.
5) I have noticed even DV files are choppy on the TV/PAL monitor, whereas they play beautifully on the computer monitor, so it doesn't seem to be an AVCHD issue but rather PP and nVidia not really talking to each other (or maybe nVidia not listening on the TV side) - NOTE: when playback is set on the TV/PAL monitor, DV playback in the program window on the computer IS ALSO CHOPPY. But if I switch off playback on the PAL/TV monitor, DV playback on the computer monitor is beautiful.
If I play one of the AVCHD clips on the EXCELLENT media player classic (MPC-HC v. 1.6.7), they play absolutely like sweet butter both on the computer monitor AND on the PAL monitor (bar the 'softy' image due to the stupid nVidia driver de-flickering what is an interlaced video being played on an interlaced monitor - what is wrong with nVidia engineers?)
So to cut a long story short, can some please help, if they can, identifying the culprit of this situation and killing it?
I know I should upgrade the processor (and may just do that, however a Phenom II x4 is the maximum my current MB can take, and so is 8GB RAM), but is it going to help? It seems the main problem is having video playing smoothly on the PAL monitor, so it seems a video/CUDA/PP issue more than a CPU issue, but you tell me...
I am turning to you since I have been banging my head on the web about this for weeks now and I am at my wits' end.