You betcha! BlenderArtists is another resource or Blender Market, if hard surface is your thing: https://blendermarket.com/products/hard-surface-modeling-in-blender
There are no smoothing groups in Maya (only soft and hard edges). Try Normals > Unlock Normals, and if there are still any hard edges, Normals > Soften Edge.
But you can use edge padding too, and then you should not get edge issues even on lower resolution. 2k for a simple cube wouldn't make any sense...Also you don't need hard edges on every UV borders. Actually its the reverse. You need UV splits everywhere, where you have hard edges, but you can have an UV split without a…
I don't do much sculpting, but my friends who do a fair amount say they bevel their hard edges if they're doing a lo poly in order to hold hard edges in z brush. do you have any better methods for holding hard edges?