Have you actually looked at your paging statistics (pf/s) to see if you're paging at all? The question may be moot if you're not paging while your project is playing back. Note that you will see some routine page file usage even if you have plenty of RAM - ignore that as long as the amount used is more or less a flat line. You're only concerned with paging activity (the page faults per second metric) during a DAW session.
There is no real downside to making your paging device bigger, other than a couple gigs of wasted disk space. The important thing is to a) make it a fixed size as you've done and b) make sure it's not on the same physical drive as your audio files. If moving it entirely to another disk isn't feasible due to inadequate space, you can split it across multiple drives. You've probably got 8GB to spare, so just make it 8GB (or even 12GB) and forget about it.
What I would not do is set the page size to none. Windows will die a horrible death if it ever happens to need some virtual memory and there is none.
Wait a minute...is that SSD your
only drive? That'd be a different can o' worms.