As per the title, the game freezes completely, seemingly at random; no amount of waiting solves this (or at least, 20 minutes of waiting did not).
Sometimes it seems like it occurs most often when switching which building is being placed, but this is not consistent and is probably not the root cause?
Ultra-low graphics settings
This seems similar to #1276269164947836948 message this issue, however, unlike in that post, a complete reinstall and wiping of the game folder did not fix the issue. This issue also occurs on all launch options (Vulkan, DX12, etc), and even when launching under Proton.
System info:
Kubuntu 24.04
6.8.0-41-generic (64-bit)
Wayland
i7-6700T CPU
Mesa Intel® HD Graphics 530