Speed optimization for subdomains

Hello !
Is there a way to make speed optimization for subdomains only ?
When i want to setup speed, it is applied to main domain only and i don’t see a way to affect subdomains without touching at main domain.
Thx for help !


did you try to turn off the orange cloud on the dns settings for the main domain, and leave it on for the subdomains ? (i believe this could do the trick)