I used On screen Display and started playing Dirt Showdown. I kept my settings to 800x600 Ultra Low because that card sucks and got very smooth gameplay at avg. 5fps. (Yes, 5fps)
But then I noticed that in Main Menu The card Usage is more than 70%, but when I started playing the game (That is racing) I noticed that my Usage dropped to 15-20% !!! It was running smooth. I thought it may be wrong, I turned settings to 1920x1080 Ultra and I still got 5fps but with little micro-stuttering. But still the usage was 20%!!
My card temps
Idle: 58 20% load: 64 70-80% load: 72
I want to ask whether it is a CPU Bottleneck or something else? My CPU is 32 Bit.
I don't know if I'll know whats happening in my Old rig, But I've got my new one which runs game at highest.
More aboutusage micro stuttering gaming
I bet the cpu is at 100%. Since you tried ultra and low with the same results it is definitely the cpu.
Yup CPU is at 100% always. So is it CPU bottleneck?