Now that Giles Coren has said that sourdough "tastes like shoes",
Does he eat shoes often?
I think my sourdough tastes fine, as does everyone else who eats it, but the texture tends to be a little 'chewy'. But then, when I made bread with conventional yeast, that was often a little chewy, too.
I'd suggest to the OP not to make such a big starter (I assume that you did chuck out discard half each time before feeding it). It gets quite expensive in flour to keep making big ones. I keep mine to 25g each of flour & water to 20g of starter (but it could go smaller) and keep it in the fridge for a few days if I don't plan to use it (I've also some in the freezer in case I manage to kill the current one). When I want to make bread I use a small amount of starter (9g is enough, but you can use more) with 70 -75 g each of flour and water, while keeping the 'base' starter going separately. That will easily raise at least 1kilo of flour, I have used it with one and a half kilos before now and it works fine. The starter must be doubled in size and bubbling well when you use it.
I always do the mixing and folding in the evening, leave it to rise overnight and bake in the morning.
@ SueDonim
My last loaf was not exactly a success. I forgot to put the starter in 
(I tried to incorporate it into the ball of dough, but it didn't really work...)