Photo and Graphics Designer - Can I really only use 12 percent of my memory?

[Forumarian]

Is there any way around the 32bit memory limit of P&G Designer?

It is always saying it's getting low on memory and crashing sometimes even though it's only using about 1.5gb and I have 16gb of memory.
Yesterday I lost lots of work because I didn't save for about 45 minutes and had a crash.

I have already optimised images.

I specifically bought the amount of memory I have so I wouldn't have these issues.

Is the only way to use my 16gb of memory to chuck p&G designer and rebuy the much more expensive designer pro with lots of features I would never use?

It's really quite dissapointing, I'm thinking about going back to Inkscape (since they fixed the problem that made me leave) of course I'll have to spend a few days redesigning everything in there.