Yeah, it really is... But obviously it is not that severe because otherwise more people would complain about it.
I'm giving it a last chance by ordering the single-sim version and hoping for a different result... It not, well, then it will be the S9 (which is also a bit disappointing, but that's another story)
If you want you can flash my omnirom custom ROM.
It is stable.
We just miss VoLTE (should come later after Q 4.14 became stable enough)
And a camera upgrade (comes with the Q 4.14 development)