i know it a meme at this point for INDEX 3 has bad production, but when researching wow it show a lot (from 4chan sources) right click on picture to open in new tab if it show you the ? symbol
Index 3 is so bad because of poor planning. Far fewer people are involved.
You only need to look at episode per episode. The amount of gengman and key animators is so low per episode that its well below the standard count. It's an absolute ass production.