It&#x27;s not a matter of a few extra MB, but number of libraries, more libraries equals more bugs equals more problems.<p>I&#x27;m not saying only play has this problem, almost all java frameworks from the time of play have similar properties.<p>On the other hand, it is slow, embarrassingly slow (try running it on RPi). For me it&#x27;s really complicated as well. You have routes file (which is redundant). Templating language forces you to write Scala which then uses a Scala compiler to compile which it is really slow (even Martin said it&#x27;s slow). It&#x27;s a vicious circle.