Think it´s related to the resource issues. Experienced it both in PvE and PvP. Noticeable in PvE where stamina and magicka runs dry faster than usual. In PvP I´ve noticed in when trying to heal myself. Even with defile-debuffs the healing feels extremely off. No heal-debuff can reduce incoming heal to 0. Hopefully it´s addressed in todays maintance/patch-