I am having very similar issues with the exception of codec and comp size. i am using all 720 X486 presets. All imported footage is 720 qt.mov and has been interpreteded to the D1 preset, yet after a few ram previews of my comp, when I send it to render…it freezes on a frame and then skips to the next clip and freezes as well.
I am running AECS3 on a G4 with a max of 2gig memory, but I am using a very fast raid drive for my media. I’ve been at this for about 12 year and have never run into this problem.
Not too savvy with memory and cache issues, could that be the problem?
I have run a disk check and all my drives read error free.
BTW, when I did reboot and reimport the video clips, did not ram preview and the rending turned out ok!
Nevertheless…I love to ram preview, so is there a fix in the settings or preferences that could alleviate this problem for me?
other than an upgrade. I hope to have a new system within by the next quarter!