We are currently stuck at a high diff. It will take a while until that's resolved.
And transaction confirmations slow to a crawl... great...
So my wallet's transaction history gets littered with pages of conflicted generate transactions, and I can't even spend coins. I am certainly disappointed by the quality of this switch-over so far.
Lot's of mined coins came in after POS became active, but now they're all NOT accepted

, Is this normal?
It's normal after a switch.
Sounds more like a known bug that you didn't bother to fix. I would hardly say something like this is 'normal'.
I certainly hope the dev's get their shit together on this.
It's an expected outcome when every miner on the network is able to spam blocks. Nothing we can fix.
As for the difficulty - it will take a while, as I said.