Just rush boss as fast as possible, collect the fragments and maps, get out. I kill some mobs in the way but I don't go out of my way and don't lose too much time casting skills.

Sample size = 60 fortress maps in an hour.

To buy the maps I use the optimized quantity and yield function in poe.re with 110 quant, 150 rarity and 40 currency and pay max 60c per map.

I think the atlas tree isn't optimized, I came up with it on the spot.

I use a filter made by a content creator but I edited it to show lower tier fragments and lower tier scarabs, you can find his profile going to his YT channel: KingPinUwU. It's very strict tho, be advised.

4 domination scarabs + 1 influence scarab of interference. I don't click every shrine that I see, I mostly use the domination scarabs to fill fragment slots and click one or two altars in the way.

I did not include the maps in the profit just to keep it straight forward, but they're guaranteed due to atlas tree and scarab of interference, they add another 2 div of profit on average. Also removed a fracturing orb from the profit but if you use the optimized search I told above and can clear mobs in the way to the boss room you're expected to drop some raw currency items, just try to keep a pace of at least 50+ maps per hour.

Good luck!