The value "1688/1722" is "correct-ish".

The first value tends to be what is true, according to our pools and blockchain explorer.
The latter is non-updated nodes still trying to sell you their chain, and confusing the client slightly.

It will probably switch beetween saying "Synced at 1688" and "1688/1722" while things battle out.

Please, refrain from using pools that still reward 10000, they're on the old chain and need to update, plus it confuses the network.