Normal Maps & Render

I have a problem rendering the Normal Map in the Render View.
After that happens, I can’t render or view thumbnails unless I re-open the project, and even after that it doesn’t render.

Is there a few preferences/settings I can change on my computer or is it the software?

in Node view, try click the right mouse button, select “Recalculate All” option.


Which graphic card is your system using?
How much RAM is available on that graphic card?