@Allan It is all in the drivers but not for my “problem” image.
So with my image and “your” drivers (511.09) with an earlier copy of GPU-Z and ‘OpenCL’= OFF my I7 4790K with 2060(6GB) 1X (1 fan) I got this
Not quite as bad as I have seen just trying to access the image but not a successful export either.
So I switched to your image and got this
and this successful export
I double checked to make sure the AI edits were still in place etc.
But it appears I did have ‘OpenCL’= ON for this test.
Although my i7 4790K has an onboard GPU (IGPU) it is connected to other monitors so the starting GPU memory usage was
So with the right image and the right drivers it is possible to use PL91 with AI and export successfully but looking at the memory usage I recorded it is a close thing.