Yes. Me. My dad is an alcoholic Schizophrenic, with a personality disorder and OCD. He has definitely added to, or been an unhelpful starting cause, to my PTSD.
I have seen so many relapses and psychotic episodes, rage episodes etc. and we also don't live in an area where national health services are anywhere near up to scratch. Nobody explained to my mum, or the family what was wrong with him for the first 7 years, we lived in fear of an unnamed madness, and sometimes my mum bought into his delusions when they were more plausible. They also had him on the wrong medication for 15 years, which was really bad. And they didnt come out when we desperately needed them to at times. As a result I saw and heard some very frightening things growing up. I understand your despair... having to live with someone seriously mentally ill is very hard to describe in any short space, and often people don't quite understand how bad it can be even when you try.
When he is 'well', he is not much nicer - in fact sometimes he's nastier. At least when he is psychotic I can feel sympathetic rather than angry at him, and recognise he is very ill at those times. But I have no relationship with my father, and I don't want one. My feelings about, and experiences I have had with my father, the experiences I have had with the mental health system in relation to that (And also my own personal experience) has had a lasting profound affect on my life.
So I think I have some understanding and have dealt with it, yes. You're not alone, mate.