If you use mods alongside all DLCs, install optimization mods like Performance Fish or RocketMan to lower the heap allocation footprint during startup. Preventing Future Crashes
If you are a Steam user, you can still access this specific version by right-clicking RimWorld in your library, going to , and selecting "version-1.4.3901" from the dropdown menu. The "All DLCs" Experience rimworld 143901 all dlcs