You keep using the word interlacing when you mean interpolation. Frame interpolation mimics higher frame rate, but is not true HFR. Oklahoma is 30 fps and that's how it is presented on the Blu-ray, in it's native frame rate, so no interpolation is involved. The "interlacing" is due to the fact...
The "soap-opera effect" has nothing to do with sharpness or detail. It has to do with motion, as in frame-interpolation to reduce judder and smooth out the motion to give an appearance of a higher frame rate. It's not the way 24 frames-a-second film is supposed to look. Does your new TV have...