Tested and worked by me !
Current version : Patch 1
Unlimited Video Memory : ON
Seems like there are several graphics option that will use GPU power instead of
CPU power if you set those options ABOVE "high" (very high to extreme) and thereby
reducing CPU burden and in return give you more fps.
Here are the 4 options that I mentioned above :
1. Shadow : set it on "Very High-Extreme" (put it above "high" so it will processed by
GPU instead of CPU)
2. Particle : set it on "Very High-Extreme" (same like above)
3. Unit Detail : set it on "Very High-Extreme" (same like above)
4. Building Detail : set it on "Very High-Extreme" (same like above)
Note : the most important thing here is you have to set those 4 options ABOVE "High" !
And here are several options that I recommend you all to be set like this :
1. Terrain : set it to either Low or Medium
2. Grass : set it to either Low or Medium
3. Trees : set it to either Low or Medium
4. Water : set it to Low - High
5. Distortion Effect and SSAO : should be unchecked (but still optional,
if you have good GPU it might be not a big performance hit)
Note : those 3 settings are really CPU heavy burden alongside Unit Size !
At least, this will help you guys to get additional fps until CA release patch 2