Thanks for your reply, I didn't mean that this specific file was 5MB in PS, I meant the usual files I used to work with. I can't check on PS because I got both Designer and Photo, and I canceled my CC subscription, but if I "do the math", I still don't think it should be this large.
1 image (the building) is 2.5 MB, and it appears in 2 layers = 5MB total
1 image (the sky) is 400kb, and it appears once.
1 svg (the logo) is less than 100kb, and it appears once with a color overlay effect and opacity.
I also use one mask, a level adjustment, and tone mapping.
Should this really go up to more than 50MB?
Thanks again Ben