video booth lag in live view while recording

[jimd4156]

When I use the video booth mode dslr remote pro the live view display is very slow especially once I begin recording. I can't believe more people aren't complaining about this.
I use t2i and t3i. My computer is new and very fast (8core, 2.9 ghz processor with independant video card) I use it for video editing, so it is not possible that it is because of a slow computer.
Has anyone been able to figure out why the lag? I have 6 computers and it lags on all of them. Any help would be welcomed.

[Chris Breeze]

What processors do the computers have - Intel or AMD? I've tested this on a variety of computers with Intel quad and dual core i7 and i5 processors and can't reproduce the problem.

[jimd4156]

What processors do the computers have - Intel or AMD? I've tested this on a variety of computers with Intel quad and dual core i7 and i5 processors and can't reproduce the problem.

amd phenom 11 1065t six core on my desktoptop and intel i3on my laptop

[Chris Breeze]

I've finally managed to reproduce this on an Intel Core 2 laptop - before capturing video the live view delay is approximately 1/10 sec but during video capture it increases to around 1/4 sec. Canon's EOS Utility software has exactly the same problem on that laptop and so it appears that it is a problem with the Canon camera control libraries. Unfortunately all I can do is report the problem to Canon.

This doesn't happen on any of the i5 or i7 computers I tested. There is still a small delay in the live view images because it takes time to transfer them from the camera to the computer and to decode and display them on the screen.