Generally, in a VN with parallel routes, the number of renders tends to increase throughout the chapters. However, in this case, it was the opposite. I would say that this DEV ended up releasing a half-finished episode, as it seems they spent too much time trying to create animations and lacked experience in doing so.
Episode 1: 2076 renders
Episode 2: 1238 renders
Episode 3: 1356 renders
Episode 4: 724 renders