Query position delta:

sneak speed: 0.086
walk speed: 0.141
sprint speed: 0.172
sprint jump speed max: 0.473
elytra max speed: 1.693
creative fly speed max: 0.990

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Variable position delta:

sneak speed: 0.064
walk speed: 0.215
sprint speed: 0.280
sprint jump speed max: 0.489
boat speed: 0.381
horse speed: ~0.700
elytra max speed: ~1.600
creative fly speed max: 1.088