you have 11 gb on your gpu, I have 8.Do not forget that daz can use a lot of the available space on your gpu. You dont really have 11 GB free, more like 9 or 10. Make sure you have the latest drivers and the lastest studio version. There is also a bug in daz studio that it sometimes doesnt render with gpu, you have to restart studio in order to use the gpu again.

Also i would first make a small render and see if studio uses the GPU( say 400x400). You can see on the renderpane if daz uses the gpu or CPU( you can see CPU in the renderpane, if studio switched over to cpu]

I have had this happen and had to downsize the render size. sometimes i can render larger but than i have less content in the scene.