Yeah, unfortunately not and given how the renderer works I would not expect it to change any time so. In order to allow this it would have to support tiles or other forms of spatial segmentation or else it just blows any computer out of the water no matetr how much memory you have once the buffers exceed a certain size...
So crazy. It means that making masks on something like this is a massive pain:
Only work around I've found is to duplicate the comp, reduce its size, do the masks and then bring it back over to the original comp. Crazy. You can also temporarily scale that comp and its mask layer.
Doing it with the copy method means in this particular example, I can go up to 800%. This obviously doesn't work if you have a mask layer over the whole comp and need to fine tune stuff.