I have a gtx 745 oem (4gb) core i5 4460 and 10 gb RAM. Could I run this at 1080p with high settings but with ultra unit sizes, low shadows, low water, low sky, low grass with all extras off. If I can run it, what do you think my estimated fps would be? Im aiming for an average of 30. And if I can't what would I be able to run it at but keeping ultra units.