When playing in Ironman, every autosave is taking 3+ minutes which renders the game somewhat unplayable.
I just updated to Mavericks with the latest Steam release and EU 1.3 and had not played EU 1.3 before upgrading so I have no baseline for comparison but it was never like that in Mountain Lion and EU 1.2...
MBP 15" Early 2011: 2.2 Ghz, 8GB RAM, AMD Radeon 6750 1024Mb
I just updated to Mavericks with the latest Steam release and EU 1.3 and had not played EU 1.3 before upgrading so I have no baseline for comparison but it was never like that in Mountain Lion and EU 1.2...
MBP 15" Early 2011: 2.2 Ghz, 8GB RAM, AMD Radeon 6750 1024Mb