Fixed rare crash in battles when unit banners were moving slowly due to low frame rates.Fixed crash when placing deployables with a single click in invalid locations on the battlefield.Fixed crashes occurring when entering battles, declaring war, and ending turn after changing the unit size in the advanced graphics options menu in Campaign modes.Incremental performance improvements, reduced CPU bottleneck in a number of scenarios - further improvements pending in future patch.
Here are the patch notes for Total War: ROME II- Patch 4 (version #7573.461942):
