Yeah I got this CPU for Sins as well funnily enough. I play with 2 friends against AI with custom maps that we make. When I used my old i7-5775C, I would get about 3x lower FPS than my friend's 5600X while we played Sins of the Prophets 0.8 against the flood. I would be getting around 30fps with extreme stutters and my friend got over 100 without the stutters.
5800X3D easily removes most of the stutters, and I don't experience stuttering in heavy combat where my friend's 9700k with ddr4 3200 c16 does. I am not sure if the cache actually does help though. I only went with Ryzen 5000 because I already had a friend test the performance and it was a known quantity. But regardless, if one friend is complaining about non-stop lag, we will end the game. So having this new CPU isn't a fix for coop, haha.
The new Star Wars Interregnum + E4X release is out now. I did recently make a minimod for Goa's E4X that cuts Fleet Supply + Capital Ships in half for all AI and Players which is awesome for lower end CPU's and end-game combat with 10 AI. This works for Vanilla factions and Star Wars Interregnum Factions.
Cuts fleet supply for higher end-game framerate for E4X/SW Interregnum.
www.moddb.com
I made this mod so my friends don't have lag spikes anymore!