Mediocre and headache-inducing

There are far better ways to construct a psychological character study and really get under the skin of the main character than to pummel the audience with extreme, headache-inducing effects. Let's just endlessly spin the camera or let's just ramp the irritating soundtrack to maximum volume.
The style of "Krisha" became so annoying and over the top (within the first half an hour let alone all of it) that any trace of nuance or depth was thrown out of the window.

If you want a better psychological portrait of a fractured woman, the subtle yet brilliant "45 Years" directed by Andrew Haigh and starring Charlotte Rampling is waiting for you. That's a film that knows how to intelligently convey whatever points it may have, unlike Shults' "Krisha".