Depends on the importance of the position. I'd be willing to spend a minute or two on each resume. I'd probably take a week to get through them.

If I'm hiring directly for my team, I might even take more time on each resume.

Would you be throwing out a lot of the potential good hires with only a minute looking at a resume? And likewise, are you sure you’re not getting false positives of poorly qualified candidates with good resumes in only a minute of looking at the resume?

This is what the GP is lamenting.

At 500 minutes of time, this is a solid day of non stop resume reading.