Space block uses ALOT of memory to offer 65535 levels of research (infinite) or 655,350% bonus after a lifetime of research. This takes ALOT of memory. This mod enables the max level of research to be configurable, defaulting to 400 levels or 4,000%. At 400 and 21 players - 6 building megabases, we never went over 4 GB of memory. Previously with we had to restart prior to anyone launching a rocket, at 11 GB on a dedicated linux server.