I thought this was the case for me also but realized I had to press down on the d pad and they work great now. Hope this helps.
I am currently using the bipod attachment on both the [AK-24] and the [LCMG], and just like you I am experiencing the same issue with the bipod on PS4. Even when I have the bipod deployed the recoil remains pretty much the same. Maybe there is some improvement on the recoil but that difference is barely noticeable. I still have to fire short bursts in order to maintain a steady recoil the further away I shoot. The people that says the bipod is working, by providing better recoil control once it has been deployed, do NOT know what they are talking about. Perhaps the bipod is working for them but it does not work for people like me.
Bipods do not work, hardly any reduction in recoil, and worse they do not stick in position, They are orderline useless.
