i have the same problem. everything lock goods. H/R perfect (2330 for xmr ) but no valid and invalid share . after few H nothing.
i use tweak 0 - to 5 . change OC and every thing but no share just endless hashing.
That's not the same issue as these guys have with Lethean and Sumo. You probably have a driver problem, at least this is how it manifests, no shares found at all.