In a pool chlorinated by an SWG or manually with bleach additions, the pH rise is really a function of how much aeration your pool experiences and how much TA is in your fill water. Both of those chlorine sources are fairly neutral in terms of adding to the alkalinity of the pool water with an SWG being alkaline-neutral (the caustic created in the process of forming chlorine gas is offset by later acidic chlorine oxidation and sanitation reactions). Bleach is slightly more alkaline because the bleach carries some sodium hydroxide with it which adds, on net balance, to the TA of the pool. But in both of those scenarios, fill water TA and aeration are the dominant factors in pH rise.
Stabilized chlorine products (dichlor powder and trichlor pucks) are acidic in nature and they will lower both pH and TA. People that spend years using trichlor and dichlor are shocked (no pun intended) when they switch to bleach or an SWG and then are suddenly forced to add acid much more frequently than what they used to prior to switching.
Also, a big factor in your pool is the fact that is was replastered less than 12 months ago. New plaster surfaces often add to the alkalinity of the water over time and typically force the use of more acid to control pH during the first few years of the plasters life.