[Bug] Cyclone of Tumult overriding One Step Ahead

it appears that the movement slow from Cyclone of Tumult is overriding the base action speed minimum set by One Step Ahead

Action speed and movement speed is not the same.

Action speed is multiplier to attack speed, cast speed and movement speed.
Cyclone of Tumult affects only movement speed not action speed.

If you want to bypass downside of this cyclone use "The Stampede" https://www.poewiki.net/wiki/The_Stampede.
It gives movement speed is always 150% of base.