Ok, things that do make it better and also can help them make real progress if they find reading hard. My year 2 ds does, is about to be tested for possible dyslexia, so I know where you are coming from
Read with them. You read a line, they read a line or they read a page, you read a page. This way they can get a sense of the 'story' (and I know that the story can sometimes be a dire ) while not getting bogged down in decoding the text. Sometimes read the words at the same time as them....sounds daft but it does help them to get a feeling of fluency.
Read 'better, more fun' books that are beyond them, but point out the words they can read.
Get books that have text for the kids and text for the adults to read....the apple tree farm books do.
Set aside a short time to do this. When this time is up, finish, don't let it drag out endlessly.
Carrot and stick.....stickers etc for reading without whinging etc
All of these things make reading less awful with my ds and bless him he really finds it hard. Key is making them realise that you read for the story, not just plodding through the words....so whatever you can do to improve the 'flow' of the text helps.