Contributing what I’ve experienced to this thread as well.
Build Number / Patch Number: 2020-06-10-1139-p16401-v268-S (experimental)
Seed Number: 1450360757
Type of Bug: Gameplay / Crash
Blocking Progression: Not immediately, but eventually.
Result of Save/Load: Seems to clear up on a reload for a while and then get bad again.
Playing Zen mode for about 9-11 simulated hours (3x speed) before I hit my full crash. Here’s what I noticed leading up to that crash:
Once I started building my roads, it took a while for workers to start using trucks, then they used them for a short period of time (while my road networks were smaller), and then they stopped using them entirely. All trucks looked stored in the Truck Depot, but and equal amout also appeared to sit idle on the roads.
As I expanded further and got to resource nodes and built mines on them, the mineral node in the south functioned properly, with workers retrieving minerals from the mine and moving them to storage. While in the north, my Isotope mine was ignored by workers.
First thing I tried was changing the advanced AI to favor mine emptying first then isotope movement second. It didn’t help, but I did notice that my workers were WAY OVERPROVISIONING for mineral movement. 20+ workers for maybe 5 jobs in that category.
Then I thought it might be an issue with the roads connecting to the isotope mine, so I demolished them and waited to see if the workers would retrieve the isotopes from the mine. Still no luck. Rebuilt the roads, still nothing. So I ignored that mine and moved on.
Eventually I noticed a slowdown in responsiveness for the game, usually when there were lots of idle workers and I tried to build a building or a road. Eventually the game crashed due to memory leak. The straw that broke the camel’s back was a Council monument upgrade.
Ok, so then I reloaded the game, and things just started working again. Workers retrieved isotopes from that mine that was troublesome before, and I kept expanding with a goal to push the limits of the game. I focused on building more roads, and ran into another interesting issue.
When upgrading a command center attached to a road, it suddenly caused a large section of my road network to become ROAD BLOCKED. I submitted a bug report with screenshot at this point, and saved the game. That’s the save I’m attaching to this post.
Save game: https://drive.google.com/file/d/1lQwP71is0l53OGXjx2HJT9DSjhuY8ujy/view?usp=sharing
I hope this helps isolate the bug! Thanks for all y’all do!