Maybe it may make sense to change the architecture that is creating all this resources usage, since we are probably in the middle of the upgrade to latest Peercoin's code?
If you've any concrete suggestions to make on how this might be achieved, this'd be a good place to air them.
I'm not a developer, so I'm afraid I can't make meaningful suggestions here, but generally speaking I was thinking whether it can make sense to launch a new coin, let's call it Slimcoin-Plus, with the same idea of PoB and with a swap premine for all the willing Slimcoin owners in which we'd change all the parameters that you mentioned in order to make it more "slim".