btc1 node currently gets stuck at block height 494782.
btc1 is literally incapable of going past block 494782 because that is when they forked (they also forked a block too early) and no one is even mining their blockchain and producing valid blocks to go past that height. You are synced as far as btc1 is able to go.
Switching to core node didn't help synchronization. Does anyone know how I can resolve this stuck issue without having to download the entire block chain again?
Install Core and do
reconsiderblock 000000000000000000386cd4605d5f2481dc5ff02f95b1a4a18749fe51ff90b7