The Nuke 3D Engine - Nuke 101: Professional Compositing and Visual Effects - page 395

The textured cube now appears to the left of the car. It already looks like it fits in
there, because it's already at an angle, just like the floor.
Checkouthowthisplaysandseehowwellthetrackedcamerafares.Thequickest
way I like to do that is:
14. Click the Proxy toggle in the Viewer to turn on Proxy mode and scale down the
image to half size ( FIGURE 9.15 ) .
Figure 9.15. Turn on Proxy mode for quick playback.
15. Change the Downrez drop-down menu from 1 to 2 to further increase the speed
of processing images ( FIGURE 9.16 ) .
Figure 9.16. Changing the Downrez option reduces the quality by 2.