It's never been a case of "bad", it's a case of levels of "severity".
It's only a case of "bad" when you are unsupported at school or in a school who does not know strategies for dyslexia. (Another example of my dyslexia are the words "who" and "how", never know which one it is until I see the pattern.)
Mine is always "severe" whether I'm, eg Tired or not. Happy or sad. Hungry or well-fed. Same result every-time.
Forgot to say - on the reading side of dyslexia - I read thousands of pages everyday at great speed. I am writing a history book. So I have to read several lengthy documents/books/articles (some scholarly some not) simultaneously, pick out the key info I need. Then process it all in a few seconds by analysing what I've read, comparing it with other information and then decide what to do with the information I've gained and then if I'm happy, condense it down into a small number of paragraphs. If I'm not happy then carry out further research, reading and analysing. I am very very good at doing this - reading and processing words causes me no problems whatsoever.
I was always a very strong prolific reader even as a child.
However reading causes my DS massive problems. He finds reading very very difficult and processing the information almost impossible. For books, the only way he can really process what he's read whilst reading is by using a talking book.