It seems the iMac is experiencing some issues. Let me check what’s going on.
Hi, your friend’s iMac seems to be behaving oddly with that file. It might be related to the GPU or software, but more details would help.
That is it
It's odd since this doesn't occur frequently.
Sure, here are the specifications, focusing on the GPU details.
It's an iMac from late 2012 equipped with an Intel Core i5, 8GB DDR3 RAM, and a Nvidia GeForce GT 640M graphics card.