there were massive freezing every new month, since last updated it comes sometimes about 17th, but still, game is almost unusable related perhaps to traffic jams in cities or just big cities expanding and recalculating routes in same time in same cpu core…

same performance issue can be reproduced while building, buldozering, after each operation game freeze for seconds (up to 30s) so even if game is paused, slow recalculating after each change in infrastructure (roads/trains) making game totaly unusable

i have i4790 with 16G ram. (win/linux/mac – same performance issue) and only one core is in use, thats cleary first step what you should do – multithreading