snapshots often streched and out of proportion

In order to save time, I would like to use more often the 2D snapshots. 

Although the overall quality is most of the time OK, I keep having trouble with the streched effect.  Objects look most of the time out of proportion, no matter the angle or I try.  As I had several remarks on this, I went back to taking separate pictures (but is extra time consuming).  Any tips & tricks other than the basic ones for better experience?  Thanks a  lot!