[Bug] using 2gb ram and takes ages to save, load, switch to starship tab

### Description
Program hangs for ages when loading save and switching the first few tabs.  Goes to not responding in task manager for a while

### Reproduce
Steps to reproduce the behavior:
as above

### Expected Behavior
Rapid saves, loads and switching between tabs


### Additional Context
Add any other context about the problem here or at least complete the following information.
 6.36, steam