I'm the author of said technical analysis! (https://blog.paavo.me/cities-skylines-2-performance/ https://blog.paavo.me/cities-skylines-2-performance/) But yes,

I'm the author of said technical analysis! (https://blog.paavo.me/cities-skylines-2-performance/ https://blog.paavo.me/cities-skylines-2-performance/) But yes, at launch Cities Skylines 2 was very heavily GPU bound, due to very unoptimized meshes and a poor culling implementation. I haven't profiled it afterwards, but from what I've read they've optimized it enough that on most systems the limiting factor is now the CPU.