Traditionally I have had to resize my jpg's to 900k or less to avoid crashing when doing slide shows. Today I decided to experiment a little with 8c and photo montages. Using Ultimate S I've dropped 400 photos on the time line with motion and transitions and I'm rendering over to M2V @ 30M, 1920x1080.
My photos are 2.5M and up in size (some of them hitting 4M)...... and I'm NOT crashing.
Granted the render isn't done yet... the time line is 51 minutes and I have another 1.5 hours to go.... but it's been going for about 1.5 hours already and I usually experience crashing long before this.