I have a 7700K Processor 4.2Ghz which automatically increases to 4.5Ghz during full use. Which is one of the most powerful Single Core Processors. Well the processor is a quad core. However Rimworld mostly depends on single core strength for performance. Even I run into lag on Larger maps or using tons of mods. If I play on the largest possible map it is completely unplayable with multiple mods. Your best option is you get the most powerful PC possible like a 7700K or the new upcoming 8700K and overclock it and make sure your PC has good cooling. Even then your going to have more lag then you probably want.
I should test out that mod as well Jetpack_Maniac. Thanks.
I should test out that mod as well Jetpack_Maniac. Thanks.