The problem is finding all of those settings. They're all under different submenus (there's certainly no global "enhancements off" toggle), and even figuring out the "no filter" setting is often non-obvious.
E.g. on my Epson projector, there's a "sharpness" setting that goes from 1 to 10, and IIRC the only way to turn off sharpening is to set it to 3. Because values 1 and 2 wind up applying a blur filter. It's not documented. You have to figure out the "3" value from trial and error with a calibration image.
Similarly you need to figure out whether each of your connected devices is outputting RGB 0-255 or RGB 16-235, and set the toggles for your TV to handle the correct input range.
And so forth. The calibration images aren't for figuring out perfect color accuracy with a colorimeter. They're for basic things like displaying smooth gradients from black to white, and are the blacks or whites being cut off? Is the gamma totally off when compared to a checkerboard? Are saturation gradients displaying normally or does it show the image is over-saturated? Is a series of alternating black and white lines displaying as simple lines, or is there a crunchy halo around them (from sharpening) or blurring?
So it's not "eh" at all. In my experience it takes 15 to 30 minutes, as you hunt around the submenus to try to find all the relevant settings, and try to figure out what each setting even means since the documentation is useless. Like, on a power-saving display, should the main color setting be "Natural" or "Cinema" or "Bright Cinema"? You're going to have to experiment.
E.g. on my Epson projector, there's a "sharpness" setting that goes from 1 to 10, and IIRC the only way to turn off sharpening is to set it to 3. Because values 1 and 2 wind up applying a blur filter. It's not documented. You have to figure out the "3" value from trial and error with a calibration image.
Similarly you need to figure out whether each of your connected devices is outputting RGB 0-255 or RGB 16-235, and set the toggles for your TV to handle the correct input range.
And so forth. The calibration images aren't for figuring out perfect color accuracy with a colorimeter. They're for basic things like displaying smooth gradients from black to white, and are the blacks or whites being cut off? Is the gamma totally off when compared to a checkerboard? Are saturation gradients displaying normally or does it show the image is over-saturated? Is a series of alternating black and white lines displaying as simple lines, or is there a crunchy halo around them (from sharpening) or blurring?
So it's not "eh" at all. In my experience it takes 15 to 30 minutes, as you hunt around the submenus to try to find all the relevant settings, and try to figure out what each setting even means since the documentation is useless. Like, on a power-saving display, should the main color setting be "Natural" or "Cinema" or "Bright Cinema"? You're going to have to experiment.