I have started playing around with sending transactions. In one case, a transaction was accepted but never confirms. If I try to submit it again, I get duplicate transaction error, so I know it is in the mempool.

I also have a HODL test transaction that is being refused by the network, which means something is broken in the mining code.

My Bitcoin Cash stuff all works okay. So with BTG being broken and BCH not broken, I would bet on BCH.