Portable Floor Rising Projector screens

[max2]

https://www.bhphotovideo.com/c/product/619901-REG/Elite_F150NWH_F150NWH_ezCinema_Portable_Front.html

Thinking of buying this one but not sure if 4K content will look good on it? Anyone own one ? Doesn't have to be exact model or size.

Any wrinkles ?

Would it fall down or move if a ceiling fan was on ?

 

[max2]

Ok guess not thanks