Hmm. While the op (rpr) says they find it fixed in 1.79, I do not.
I'm running that version (downloaded just today), and in the 2 systems I've tested which are each running 32g (as confirmed in task mgr, sys cfg, etc), psinfo still reports "physical memory" as about 4g in each. FWIW, one is running Windows 11 and the other Windows 10, each at their current latest update--and the value reported is the same when running "as admin" or not.
So it's certainly interesting that RPR found it working, while I do not. I hope we may hear in time from others confirming things either way.