Time Spy 8700 is too low... Hope it's an underclocked engineering sample or something, let's see.
About 13% higher than RX Vega 64. Might be something not working with Vega in this particular test.
But I see very high RX Vega 64 results in the FS tests, so this might mean nothing.
https://www.3dmark.com/spy/4051760