I found this sentence in a manga and I can't understand what it means. どアップ (or ドアップ) should mean close up, while しんどい means tiring, bothersome, hard etc., but what do they mean when they are put together?
The scene goes like this: Two girls are nose-to-nose , one of them is completely enthralled by the beauty of the other, and in her inner dialogue she says "“どアップしんどい" before praising the eyes and the eyelashes of the other girl.
I've seen it used as a hashtag on Instagram (on close up pictures) but that didn't help me at all. Can someone help me out?