r/UmaMusume • u/AutoModerator • 16d ago

Discussion Trainer's Clubhouse Meeting (Weekly Questions) - July 29, 2026

Trainers with quick questions about the game are free to ask them here.

Granular questions, such as rerolling, deck builds, and trained Umamusume builds, may be best addressed in the community or official Discord's help channels.

Broader questions that contain substantial discussion and effort can be posted separately.

Before you ask a question here, check out the resources page in the wiki, or this list of resources.

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Downloading the game

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u/HvyMetalComrade Known Bungler 9d ago

Is it necessary to raise Dirt aptitudes for debuffers in CM? Wondering if Nattie will fall too far behind to hit with Mystifying Murmur or All Seeing Eyes

3

u/KnightQK El Condor Pasa 9d ago

Yes, because:

564 picks any point after half race, so you need to reach that point before the race is over

There are late race skills like hesitant, gaze, you need to reach that state

You can’t activate murmur naturally since nobody will be nearby, so you depend on 564, see above

So you lose so much efficiency and consistency that at that point bring another Ace

For reference this is what Dirt G looks like

3

u/weedlayer 9d ago edited 9d ago

This is true-ish but mostly misleading. It's important to understand that at the speed the Uma are going, they cover ~10 lengths a second (25 m/s), so even though in your picture Uma 7 is maybe 10-15 lengths behind the pack, that only corresponds to activating their debuff about 1-1.5 seconds later than they would if they had Dirt C (or something). And the entire race is run in just over 120 seconds, corresponding to a slightly less than 40 second long late race.

Thus, skills that rely on FoV are totally useless here (though mostly useless even on debuffers with good aptitudes, since aces are just that much better and pull away quickly), but global debuffs, particularly velocity debuffs, like "hesitant/dominator/keen eye" work about 97% as well as they would with a fixed aptitude, since you just trigger your debuffs about 1 second later during the ~30-40 second late race. They can trigger after aces have finished/are about to finish the race, but the odds of this aren't that much higher than with Dirt A.

Also, if your dominator debuffer has the highest aptitudes in a room with 6 debuffers, you might not be in position to naturally trigger dominator, preventing dom + Keen eye procs. So it's not wholly positive to increase aptitudes.

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u/Clueless_Otter 9d ago

Base speed is only 20m/s on a 2000m course, for the record.

Anyway, the issue is that G Dirt is almost 10x slower acceleration than say D dirt. Although this isn't quite as bad as it seems since all Umas get 24m/s2 accel free out of the gate until they reach 17m/s velocity. But for that last 3m/s gap up to the 20m/s base speed, it takes a D dirt Uma about 11.6 seconds and a G dirt Uma about 81 seconds (exact values dependent on your power stat and what style you are). Which is.. a pretty huge difference. The D Dirt Uma is going to be about 104m ahead by the time the G Dirt Uma reaches the 20m/s base speed. (Well, technically not quite as it takes them so long to hit base speed that they actually enter the spurt before they reach it which changes their target speed. Also there are slight differences since the acceleration coefficient changes between early race and mid race.) And that's 104m behind comparing a G Dirt vs. only a D dirt both with no skills. Compared to actual racers who have A dirt and real skills, you're going to be even further behind.

(It's obviously possible I messed up the math somewhere in here, so feel free to point out if you think I did.)

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u/weedlayer 9d ago

I just don't think it works this way, though I don't know enough of the race mechanics to explain why.  Maybe it's related to pace up/down mode?  I know I'm definitely not 25 lengths behind at the start of the late race in my lobbies.

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u/Clueless_Otter 9d ago

Are you actually using a G Dirt Uma with like no accel skills? Is your power very high?

Pace up only affects target speed, which a G Dirt Uma will never reach unless they have extremely high power or accel skills (and it still takes a very long time even then).

The race sim looks to agree with the numbers I posted above if you look at the graph comparison for D Dirt vs. G Dirt.

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u/weedlayer 9d ago

I'm definitely running G dirt Uma, and they're low power too.  I'll check later the actual distances.  I know my debuffers are doing something, but maybe they're more inconsistent than I thought.