You can feel it before the plot even gets moving. A joke dies on impact, the dialogue sounds like a first draft nobody fixed, and the opening scene has that weird confidence bad movies always seem to have when they are seconds away from falling apart.
By minute ten, the verdict is already in. Some films do not unravel slowly or save their worst ideas for later; they sprint straight into cheap twists, ugly effects, and performances that make the rest of the runtime feel less like a movie night and more like a challenge.