1) The synchronization process is very very slow.
2) And just within 30 minutes of syncing tit, it will consume roughly about 12GB of my mobile data without even syncing much
My question now is: Is this normal, or am I doing something wrong that I am not aware of? or is it because I am running a prunned Synchronization?
Well the synchronization process you said earlier typically varied on CPU/RAM . Most of times I saw it's not about the Data speed but the system performance what taking it so long. Ex - My friend had Core I7 & My was AMD 5500U his synchronization was finished within 30h and my synchronization take more than 48h.
Well pruned mode shouldn't be any problem, I also use pruned mode. It would be better if prunde 10/20GB space. 12GB in 30min is typically normal for synchronization. Roll back to older older version is not ideal. You may face more slow synchronizing