Playing LCV3 for an hour or longer tends to cause insanely high memory usage (about 9-10 gigabytes), which eventually results in the game freezing, but not crashing, so you have to close it down the hard way. Disk usage seemed very high then too, possibly correlated…? I’ve also noticed that changing shift amounts for a while causes the above, so that might be it. I’d attach a log file, but unfortunately I don’t know where it is.