GTA 4 problems

I have had GTA 4 for awhile now and decided I wanted to play it agian after a bit but when i started it up there were major issues. I went to the graphics tab and I could not change any of the settings, they were all set to lowest and the cards ram was highlighted in red even though it only said 230mb/4000mb.

I turned off crossfireX and it allowed me to change the settings but ingame I was getting horrid performance, missing textures, and flickering textures, turning off catalyst a.i. helped a little bit but not alot.
I tried lowering the graphics and the game became kinda stable with most graphic options set to med and low but still not so good performance wise.

I tried gta 4 with catalyst 10.10 and had these issues, then upgraded to 10.11 but still the same, though i did notice my score in Unigines heaven benchmark went from 3080 with 10.10 down to 2815 with 10.11...

I do not know if it is a driver issue or if something is wrong with the game, any help is appreciated!
Last time a played the game was with 10.6 drivers and even then i was having some bad texture pop up (swing the camera around and the screen takes a second to load) and flickering (exiting buildings was the worst).
I believe 10.4 it was fine but I would not like to downgrade drivers, though i may go back to 10.10.
Also this is the steam version if that makes a difference.

Thanks!!