I have setup a isometric grid by creating smart guider rotated 120 degrees and working with the intersect points. When I'm working on vertex level this works great but when I want to group my object and "put it aside" or even move it a couple of "tiles" it does not snap correctly.

Is this a known problem and is there a fix or solution for this? I need to be very precise and I really need a grid to work faster is Illustrator the right tool for the job?

I have setup a isometric grid by creating smart guider rotated 120 degrees and working with the intersect points. When I'm working on vertex level this works great but when I want to group my object and "put it aside" or even move it a couple of "tiles" it does not snap correctly. I have tried to increase DPI but this does not give better results.

Is this a known problem and is there a fix or solution for this? I need to be very precise and I really need a grid to work faster is Illustrator the right tool for the job?