Full Guide

[Hentaika]

Made a guide with all maps and some more details on how some stuff works:
https://gamefaqs.gamespot.com/ps5/448633-mushoku-tensei-jobless-reincarnation-quest-of-memories/faqs/81296

Can be useful if you missed some shortcuts for 100% explore.

[VertVentus]

In the "Skills/Stat details" section, it swaps Talhand's pronouns to "she" when it's referring to Ghislaine, who's a few sections up.
In the "Adventure Quests" section, I don't actually think the final boss (#74) is farmable for Eternal Orbs, and the credits are unskippable so it's a slog if you attempt it. It can reach +50+40 SP for Roxy/Sylphie's out of battle healing, but there's a cap of +200 SP between your three accessories (Amulet of Charisma can get +5+60).

The game is weird since you can't refight the post-game superboss, so its Serpent King Scale drop for the Protection passive (half damage taken) can only be applied once outside the Millis Charm that comes with it.
The Second Wind passive (revive with 50% HP) requires 2 Serpent King Scales, so you fundamentally can't apply it. The Soul Orb accessory comes with it, but using this revive deletes the accessory from your character.
Your non-initial party members join with AP based on Rudeus's amount, including the AP "earned" from resetting his skills. So they can join with 9999 if you spend skills and reset him a few times. For me, Sylphie joined with like 3000 AP and Ghislaine + Roxy's party 6800 since I didn't reset enough times.
https://twitter.com/smt4312/status/1804909621129478158
Once Rudeus gets the Eye of Foresight in Ch. 4, he can use it with the HP Regen (15 per turn) and SP Regen (10-1 per turn) passives to heal himself to max.
https://twitter.com/rei_rosye/status/1805505336956404163

[Hentaika]

I think old version of the guide got uploaded first before all my checks/fixes, so gotta wait for new one if you want to see them all XD

But the core is there.

Did you manage to run the game at 30 FPS btw? XD

[VertVentus]

I played on the Switch version and that was mostly stable. It was mostly saved to the micro SD, but when I put it on System Memory, I think battle transitions were a little faster. I didn't have the Petrified Forest frame drops others did, and only really noticed Dragonbone Marsh flooring visually glitching out.
I completely gave up on finding Angel Rats though, I was even struggling to find Ouroboros down at Dusk Cavern 2F besides the bottom left or right corners.

[Hentaika]

Originally posted by VertVentus:

I played on the Switch version and that was mostly stable. It was mostly saved to the micro SD, but when I put it on System Memory, I think battle transitions were a little faster. I didn't have the Petrified Forest frame drops others did, and only really noticed Dragonbone Marsh flooring visually glitching out.
I completely gave up on finding Angel Rats though, I was even struggling to find Ouroboros down at Dusk Cavern 2F besides the bottom left or right corners.

Enemy spawns are based on tiles.
This is true for a lot of games btw, not only this one.

Some specific regions on same map can have different rates and even entirely different enemy sets.
Hence why I bothered mentioning exact spots on the more rare stuff when required.

Albeit in most cases it's logical - for example in old areas you could only access from another area for example.
But you never know when the devs would fail something, better to be safe when you can XD

FPS problem wasn't in any specific dungeon for me, personally. It just runs poorly in general and fans work louder than a rocket launch when game is launched.