I had always problems with lack of RAM for ZP and I found cheap solution.
Buy small SSD DISK (80GB is fine), install it on Your PC, turn off all swap files on system, turn on swap file only on ssd drive (use all available space).
I have 8GB RAM, but with this trick, ZP works about 4x times faster
Buy small SSD DISK (80GB is fine), install it on Your PC, turn off all swap files on system, turn on swap file only on ssd drive (use all available space).
I have 8GB RAM, but with this trick, ZP works about 4x times faster