Notify enabled kernel is useless without notification enabled ramzswap.ko module (and ramzez-0.0.3 modules are not notify enabled, otherwise they wouldn't even load in diablo/ssu kernel because unresolved symbols).
I'm sorry, but I'm afraid what you are experiencing is just placebo effect.

Since you don't seem afraid to build and run your own kernels, in order to not duplicate efforts, I'd ask you to join me and help me.
All my kernels in the "diablo turbo" project are compcache notifify enabled, and the package includes the right ramzswap modules which will be installed in the right place if you have ramzez installed.
My current SD kernel is very stable now, so in very few days I'll make a first beta release with full source code (that means, many kernel patches, a new compcache release, and some other userspace packages).
If you want to test it right now, download the last sd kernel build (it is not what I'm running/hacking right now but it's very near)