"not so realistic" is a correct and usable phrase in written English.
It is typically used to express that something is not completely realistic or believable. Example: The special effects in the movie were impressive, but the storyline was not so realistic.
I wanted it to be not so realistic but frightening".
The director, Éléonore Pourriat, told the Guardian that the film's depiction of relentless harassment was meant to be "not so realistic but frightening".
The answer, according to Mr. Adamson, is to run campaigns that are "not too negative, not too much of a downer," or in other words, "more realistic, but not so realistic you rub people's noses in it".
Unfortunately, the accuracy of the simulation results are not so realistic.
Although this makes the analytical model not so realistic, the analytical study becomes much easier.
The lower limit of the magnitude of the electric field is 28 mV/m, although this value is not so realistic.
Others wrote words that weren't so realistic, however still brought across the kids' message of love.
"The Hills," MTV's wildly popular, not-so-realistic reality show, may have ended years ago, but apparently, the drama lives on.
Likely not, so be realistic!
Editor Stephen Mirrione: One of the things we talked about was wanting to be immersive and realistic, but finding poetry in that, ways to let abstract moments inform emotionally — being really careful to not be so realistic and so literal that we end up losing any poetry we have opportunities for.
At the top, right hand side of the iris you need to shade in darkly with a normal pencil, diagonally, so it looks like the iris is going around and not just colored otherwise it won't look so realistic.
