In the one or two scenes where he acts like Dick Grayson, he seems okay in the role. The primary problem is with the writing.

He is just like all of the snyderverse's cast; perfect for the role but undermined by the (sometimes) terrible plot and writting.

He’s a nice Nightwing, I like him.

He looks the part, his costume looks cool, but again, it's the writing that drags him down as a character.