First, your Honami Rom its a ICS 4.0.X based.
But the Atomic one its GB 2.3.X based.
Two differente versions of android, thats why you cannot play games in Atomic that requires the minimum of android 4.0 (different APIs)
Now, if you want speed, stay in that atomic ROM, at the cost of not being able to install apps that requieres anything above 2.3.X (like 3.X or 4.0 or 4.1... you get it right?)
Or return to Honami (or try another based on ICS).
If your bootloader is unlocked then you may check any CM 10.x (android 4.1 to 4.3) or CM11 (android 4.4) based ROM and see if its fast enough for you.