In PES, the 'Deep Defensive Line' is a real serious problem in how its setup by Konami, it can work well in certain context but Konami have been getting it wrong, very wrong how they setup the tactics by default, hence my tactics threads and work every year.
Its never ever supposed to be set to a team by default, it only really should be available as something used for changing on the fly to stop players from getting inbehind easily if a consistent problem is occurring for the AI, this works quite well when the AI use this to either stop giving away so many chances or even at times start damage limitation if they are getting battered.
When 'Deep Defensive Line' is set on by the CPU, if you manage to score against the AI, the game is basically over, you can pass it around your backline and they just sit back stupid, really stupidly and maybe 1-3 players chase you around. Really infuriating because the tactics are that powerful if setup correctly they can pressure you within an inch of your life if setup properly or give you the required pressure needed to get the ball away from your box. This is something i have heavily questioned Konami on! This must improve,
Some of these settings completely contradict the Tactics slider settings, defensive line 1-3 does exactly what 'Deep Defensive Line' does anyway, so if the line is set higher anywhere between 5-7 or especially 8-10 but if deep defensive line is set on, its just horrible and contradictory.
This doesn't help Arsenal have two DMs set which totally unbalances the 3-4-1-2 formation in midfield as the two DMs drop back far, far, far too much by default, they should be set to CM's as 3-5-2 formations absolutely do not work with DM's! 3 center backs is enough, no need for another DM! Setting up the two in the middle to be CM's is important so the midfield is balanced and meets the opposition higher up the pitch for interceptions.
All in all, Arsenals formation is crap in the demo and fundamentally doesn't work well at all.
That was enjoyable to read, look forward to your tactics thread for this year's game. It's a side of football that I'm really interested in so basic mistakes like we're talking about really get to me and distract from the enjoyment. For years FIFA's rampaging DM has been killing me.