I can't synchronise mine since yesterday, 7.8.0 is even slower than the previous version (at least for me) block count is stuck at 308776 (41847)
Unfortunately, I have no idea of how to speed it up.
I have the same situation, wallet is stuck on block 347520...
Since a lot of people have been stuck in older blocks, the new version needs time to update with everyone else. The best course of action is to just wait. It took me the whole day and night yesterday, but my 7.8.0 is working perfectly. All you need is a bit of patience and all blocks will be confirmed.
, I'll wait for synchronization.