Biswap has just released the Autocompound pool. Currently it's paying over 1900% APY. 

Mechanics
It's compounding every 5 mins for a fee of 2.99% These fees will be burned, so it's another mechanism to keep inflation somewhat in check. 

APR vs APY
If you look at the page and the pools, it seems like you would be a fool to stake your coins in the manual pool and not use the autocompound one. 
However, please note that the returns are noted in APR (manual pool) and APY (autocompound). This makes sense, but makes it hard to compare the pools. 
APR is the return you get when you don't reinvest any of the rewards back in the pool. 
APY is the return you'll get by reinvesting all the rewards back in the pool

The Autocompound pool is reinvesting automatically, so it makes sense to talk about APY. However, when you want to compare the two, please take into account whether you would reinvest or not. 
If you reinvest the returns from the manual pool on a weekly basis, the 300% APR becomes 1747.93% ! 
That's ignoring fees. So depending on the amount of BSW you are staking and whether you want the convenience from auto compounding or not, it might still be worth it to keep funds in the manual pool! 
You can calculate the APR to APY conversion with different compound intervals here; https://www.aprtoapy.com

Staking
Whether you want to use the autocompound or the manual pool, I think Biswap has great potential and the returns are very nice. I'll end up using autocompound mostly because of the convenience and I can just keep it in there and 'forget' about it.