Reseting GSA SER keeping projects because high usage of CPU e RAM

How to reset the GSA SER in relation to memory usage and keep only the posting settings in general and the program?
My GSA SER has done a lot of submitted and verified and is now out of memory and with a lot of CPU usage. I would like to keep the projects but reduce the memory and CPU usage. I am currently running on a VPS with 5 Core and 150GB of SSD.