That’s a little high… but not much. 10bit rendering @ Normal motion filtering w/ 2 color correctors4 (one with a limit)…. I’m getting about 19-1 ratio with a dual 2.5ghz machine. HD is a bear – especially at 10bit…..
Here’s a quick trick – set the sequence to 8bit, set it to force render at 8 bit YUV, and you can ballpark everything in much quicker, and then make slight adjustments to full 10bit later including an overnight render. This works fine with 10 bit media.