This is my video card. Could this be why i can't get the beta to look good for me/ stuttering?
NVIDIA GeForce GTX 750Ti 2GB GDDR5 PCIe 3.0 x16 Video Card
Unless Hitech makes some drastic change to the Graphics just before AH3 goes live, here is a good idea of how and why your card will perform.
GTX 750Ti
GDDR5 - 2G
Data Paths - 128bit
Band Width - 86.4 Gbyte\sec
Shaders - 640
I spent the last 18 months testing with a HD 6770 SC.
HD 6770
GDDR5 1G
Data Paths - 128bit
Band Width - 80 Gbyte\sec
Shaders - 800
The best my card delivered was in 1024 mode. When I tested the massive bomber stream mission with about 60 bombers, I had to turn off post processing to get 40-60 FPS depending on the amount of action. You may have the ram for 2048\4096, but not the shaders and the data pipeline to grunt it out.
For Christmas I received a GTX 760 2G which runs the game in 4096 mode and depending on the scenery 45-60 at the defaults. Mostly 58-60 when not in the center of NDisles TT. I created a custom terrain and have found exposed rock faces like cliffs and mountain sides hit your FPS a bit. In TT are a few wide rock mountain side. You may notice looking at them reduces your FPS a little.
GTX 760
GDDR5 - 2G
Data Paths - 256
Band Width - 192 Gbyte\sec
Shaders - 1152