I am studying small-sided soccer games and I want to know if increasing the pitch size can facilitate the tactical performance because there is more available time to make decisions.
The amount of research regarding the effects of pitch size and playing surface on tactical behaviour and performance is still limited.
However, some studies have already displayed that pitch size does influence tactical behaviour and also that playing surface (artificial, grass and gravel field) apparently do not have an impact on tactical performance.
In attached you will find two papers about the topic that might support you.
The famous Brazilian star: Socrates made a comparison between nowadays football and football in his era, he end up saying that FIFA has to reduce the number of players to be less than 11 in each team in order to view best skills..this can be implemented to your question: Playing in small size fields requires a lot of skills and high stamina while playing in wide fields requires high tactics that can reduces the gap between a highly skillful players and normal ones.