resolve 18 image output looks sharpened

Hi, i just switch from using resolve 17 to resolve 18.6 ( last version) and when opening a project i have already worked on, i see the image now with what it looks like a sharpen process... it's very bizarre...

The suite is the same, the output monitor is the same ( sony x300), the colour workflow is the same ( ACES with Rec709 output), same image scalling filter...

Could it be a automatic setting somewhere that does that?
Does anyone has had the same problem? any suggestions?

Thanks,
Diana

Forget it... timeline resolution incorrect... my bad.