I played this Game since Release in Multiplayer with Friends. We needed 1 min to setup the first Multiplayer Session.
Sure, there were some performance issues, if you Build up a giga Factory. But, after 10 min use of google. We increased the Performance, so that the Game runs again well in MP. And the latest Patches also increased the MP well
I think you talking about the latest bug with TBD NAT. Please use Google before complaing. Its an Early Access Game, such bugs are normal. The Solution is to toggle "send Gameplay Data On/Off " (off> Save settings >on >Save settings) in the gameplay options.
We needed 5 min to find this Workaround. Cheers