What turns you off when it comes to bdsm

So I am asking this from a point of realizing when I feel something I am watching that is entertaing becomes non consental or feels like it is not conventional you get immediately turned off.
I like to watch bdsm and bondage in all forms of porn. Thing is I will often find something, particularly in hentia, where what I thought was some harmless bdsm turned into somthing that does not screem consent, even though in non cartoon form settings it is. Often when this happens I immediately get turned off. Does everyone else feel this way or have anything else that will immediately turn you off when watching something .