Could we(you) by any chance make new users go through some hoops, like for instance 50 posts before being able to see the GTA V section of the forum or at least being able to post in it.
Honestly, almost all of them are ridiculously stupid gif responses, tl;dr responses, or just plain insults.
Basically, by making a postcount before the V section is accessible, you'd separate the wheat from the chaff, who ever had joined the forum simply to make endless topics about V, and flaming other would simply walk away, and the ones who actually want to participate in a community would stay.
Look at the first two posts in the following topic, they are useless: http://gtaforums.com...ke-iv-obsolete/
The user "stupidmalaka" has registered only 12 hours ago, and he is instantly part of the "spam, flame & OT" part of the forum.