Individuals can manage and process novel information only to some degree. Hence, when performing a perceptual novel task there is a balance between too little information (i.e. not getting enough to finish the task), and too much information (i.e. a processing constraint). Combining these new findings to a formal mathematical description of efficiency of novel information processing results in an inverted U-shape, wherein too little information is not effective to solving a problem, yet too much information is also detrimental as it requires more processing power than available. However, in an information flooded economic environment, it has been shown that humans are rather poor at managing information overload, which results in far from optimal performance. In this work we speculate that this is due to the fact that they are actually trying to maximize the wrong thing, e.g. maximizing monetary gains, while completely disregarding information management principles that underlie their decision-making. Thus, in a social decision-making environment, when information flows from one individual to another, people may “misuse” the abundance of information they receive. Using the model of individual novelty management, and the empirical statistical nature of investors’ inclination to information, we have derived the social network information flow dynamics and have shown that the “spread” of people’s position along the inverted U-shape of efficient information management leads to an unstable and inefficient macroscale dynamics of the network’s performance. This was in turn validated through a global inverted U-shape, observed in the macro-scale network performance.