Effort makes a great deal of difference for me. The effort itself, the fact that it's there.

I am willing to suspend disbelief for Terminator 1, even if it is clear, that it's a head of the doll in shot.

But it is insulting to feed slop to your audience; it shows you didn't even try.

I have actually seen one slop-video, that I kinda enjoyed - it was obvious, that a great effort was put in a script and details as much as it was obvious it isn't being passed for the real thing.