How to remove the black points on a mesh

[bibo1 (bibo)]

hello,

the landscape here is created with a meshfrompoints and the buildings are a polgone mesh as well.
how do i get rid of the points that are shown there?
i already tried meshtoNURB but the black points are still there. i dont even know hov these are called.
i cant even select them, as they are disappearing if i zoom in.

thanks alot for your help!

[pascal (Pascal Golay)]

Hello- is the mesh far from the World origin?

-Pascal

[bibo1 (bibo)]

yes it is

[bibo1 (bibo)]

Thank you so much!! moving it to the world origin worked!