Polymarket's 15-minute Bitcoin Up/Down markets, which update based on user trades and Chainlink oracles, are reportedly susceptible to exploitation due to short lags in price adjustments. These lags, ranging from 30 to 90 seconds, occur when rapid spot price changes outpace the market's ability to update odds. Traders using bots to monitor spot exchanges could potentially capitalize on these mispriced shares by purchasing them before the odds adjust, achieving high win rates with disciplined trade sizing. However, the advantage may diminish as market liquidity increases. Discussions on platforms like Reddit and YouTube corroborate these lag reports, though the exact profitability of such strategies remains unverified.