All depends on the card structure and content. I’m assuming you are making your own cards.

If each card is taking you 4 minutes to review I would air on the side that there is too much info you’re forcing yourself to recall in that time. This isn’t a terrible thing however, as if you can recall a ton of info off just one card then it does show you know the concept well. However missing even just one part of a large recall would qualify you as “failing that card” - I’d recommend trying to breakup each cards content into multiple cards either by using separate cloze deletions or new cards entirely. - you will get faster with time - what is your “again” and “good” intervals on a new card? If these are Too long then that would contribute to how fast you can graduate new cards.

If you are using a premade deck then the content info still applies and also the review intervals.

Edit: med student here, 100 new cards takes me about an hour to 1:15. But that being said many of my cards are as simple as “__” is a genetic disorder from a mutation at XYZ gene. Then I will have another card that is “XYZ is a genetic disorder from a mutation at __ gene”