Same my scores above are running on QHD+, and I'm also running a 512GB version, no issues here with the benchmark results. Yes they come off, but takes a bit of picking1138; 3269 here on wqhd+, so no issues here on my 512gb Ultra.
On another note, there are plastic protectors on the metal bits top and bottom of the phone, are those meant to come off? They seem to be stuck well on not like the usual peel off bits.