The first game is ignored!

The first game of the first generation is ignored. From the second game the program starts evaluating the fitness of the genomes. Also, from the second game, the dinosaur can't keep 'DOWN' when the down is kept pressed, i.e. the input taken becomes slow. Any leads on where could possible changes be made on the code?

Start by tracing the first-generation game loop and the input handling for a held 'DOWN' key, then reproduce both reported behaviors. Done means the first game contributes to genome fitness and holding 'DOWN' does not make input slower from the second game onward.

Written by the indexing model from the issue text.