The title of this post is FCP7 so damn slow in HD.
When FCP7 was coded HD was a distant dream, we had just come into the 16bit coding world, DV was the best there was, who thought 4GB Ram would not be enough...hahahahha, looking back and thinking I will never fill a 20GB hard drive...
With the complexity of pro res written today for AV foundation in Apple and the equivalent in Windows systems, how can you expect classic to understand and translate and playback a codec it has no idea existed at the last update 7.0.3 of Final Cut 7?
What I do not know is what exactly the OP means by HD, that could be anything that is not by definition 4:3 aspect ratio 576 interlaced lines in the UK, or 480 interlaced lines in the USA.
Yes Classic was updated to handle a narrow range of high definition video, not above 1080 lines...
The fact is simple, FCP7 with it 4GB RAM memory limit, limits it's usefulness to older devices, the fact it still works on Mavericks, or Yosemite is fortunate and quite frankly undeserved, it has no place on a 64bit device, with 32GB RAM, when you can only access 4 of them, 28 GB remain useless.
Why are you resisting upgrading? Look I was the same, when X was released, I bought the 10.0.0 release and I thought what a load of reindeer #2 this is, imovie pro!! I hated it, but then I started to notice a trend, in fact it became more than a trend, a torrent of sorts, the good torrent..
Every day a new tutorial or website for X was updating or coming online, and you know what I cannot find any really good or in fact current websites or tutorials on Premiere or Avid that is younger than 2012...
If X is so bad, what is the reason for so many tutorials on FCPX?