My wallet synced when I updated to the latest version days ago, but for the past few days it is still trying to sync after loading the wallet again it re-scans the blockchain, takes hours to do so.
The last block number 5610710
Last block time: Thu Aug 31 14:28:17 2017
Rescan can take time, depending on how deep it had to go. Shouldn't take to much time if you just sync'd a day or so ago. What does your debug say?
After it is complete the catch up should be pretty quick.
2017-09-02 02:06:22 SetBestChain: new best=4422b58b8521fadb83fc height=5618484 trust=87133663234171 blocktrust=16821621 date=09/02/17 02:05:32