You probably ought to try a different 3D movie. From what I am hearing Star Trek Beyond is not a very good reference disc at all. People say raised blacks and dark image are what make it less appealing than either the first or second Star Trek movies.
Try out Avatar or any of the Pixar Movies if you have any of them. Much better representations of the capabilities of the 3D capabilities of the set!
On my set, I have to be about 8-9 feet in order to avoid seeing cross-talk. Also being too much lower than on-axis and I start to see cross-talk.
LG OLED65C6P / Marantz AV8801 / D-Sonic M2500 / Oppo BDP-103 / PS4 Pro
GR Research LS-9 / GR Research X-Voce / GR Research AV-1RS / Oppo PM-1