[Locked] Pictures looks granny in develop mode

I downloaded some pictures to Lightroom classic yesterday and in the library they look fine when I go to develop them they are granny please help I have to get these pictures to a client this week and I have no idea what is going on! Thank you!

[Mod: Moved to the Lightroom Classic forum and edit title]

Mod: Thread locked because double post Further discuzssion pleasesee here:

Photos are grainy after loading - Adobe Support Community - 13412730

Please don't create more than one post for a problem !!!