Hey there! I am purely using this mod to make my factorio experience more fun, but I should mention some odd things going on with it.
First off, it looks like the quality condenser doesn't enjoy working unless it has been interacted with recently. This means that I typically have to go move an item from one slot to another to get it to "unclog" and start condensing again.
Secondly, it looks like it likes to wait a second or two until after something has been inserted into it to start condensing. This becomes a problem if there are multiple fast inserters putting items into the condenser. It won't actually condense until it is either full or, very rarely, has a long period where nothing is inserting into it
This mod is great, and I can only thank you for what you've done already! I hope you make these changes, but that is all I've noticed