Question about over-encumbrance

[MDCityNIGHT]

Do movement speed reductions caused by over encumbrance stack with movement speed penalties from armor or do you just use the highest reduction out of the two?

[Fomsie]

You use the worst penalty, they do not stack.

[Nefreet]

Go with the worst penalty. I believe it's detailed in the "Additional Rules" section of the CRB.