yea full action dosent really fix it, it just moves the problem to higher levels when people get more actions with spells etc... hide is part of DnD 5e, what needs to solve it is how AI uses perception just not on sight but also 360sound, and how it reacts to investigation when in combat but cant persive a enemy...
for example, greater invisibility adds the same problem, and everyone can be target of greater invis... you have to add 360 sound to AI and a reactive AI that tries to look for targets...
so no, full action, or obscure etc, dosent fix the problem... it at best delays it, and it will come back with greater invis and more actions... only a reactive AI can fix this...
