[TYPO3-mvc] f:form without cHash does only display same site

[Domi]

Hello,

in my register form I want to save data of the input fields inside of my 
model. This action shouldn't be cached so I make use of 
noCacheHash="true" but if I use this option, the redirect does not work 
inside of my saveAction controller. How should I assign forms in 
extbase, if they should save data and redirect to landing pages?

Regards,
Dominic