RogueTech is a massive game and requires a lot of memory. Theoretically, your computer will use its pagefile (swap space) to ensure your physical memory (RAM) isn't overloaded. Unforunately, the version of Unity that Battletech was built on will sometimes dump the entire contents of your RAM to the pagefile, whether it's actually necessary or not. If the pagefile is too small or cannot be expanded quickly enough, this can cause a crash.
The RT-Crew's minimum system requirement is to have at least 16GB of physical RAM (32GB or more is STRONGLY RECOMMENDED) to minimize crashing from insufficient memory. Additionally, as a general configuration rule for all computers, make sure you have set a pagefile that is at least 1.5x the amount of your physical RAM, ideally on your fastest drive.
For example, if your computer has 32GB of RAM installed, RT recommends setting your pagefile to 48GB.
To change your Pagefile in Windows, refer to the diagram below:
You'll notice the Windows interface expresses the pagefile in MB (megabytes), whereas the actual value you want to express is in GB (gigabytes). To convert, simply multiply your desired pagefile size in MB by 1024.
In our example, we want a pagefile of 48GB, so we tell Windows to reserve exactly 48 x 1024 = 49152 MB
Other Operating Systems
If this doesn't match the interface your operating system provides or you need additional help, I refer you to the Internet or, failing that, the RogueTech Discord.