I do a rendering by a high-resolution PNG form file.
For example the one of the size in 7000px X 4000px.
This is necessary to edit by other software.
High resolution is needed to turn off an anti-alias.
But when some degrees will be large size, a rendering of a multi-core isn't performed.
Only one of CPU reacts.
It occurs at the vicinity beyond 3500px.
This phenomenon had occurred to version 10 at least.
Time of my work is consumed very much.

Is there a measure?