According to ChainCatcher, Aave adjusted USDT lending rate parameters on the Ethereum Core market at block 26,241,799, lowering the rate inflection point from 94% to 92% utilization. At 94% utilization, borrowing rates increased from 4.5% APR under the old curve to 7% APR under the new curve, a jump of 2.5 percentage points.
The adjustment creates an additional buffer: the 92% utilization threshold leaves approximately 57.84 million USDT unborrowed compared to the previous 94% setting, tightening liquidity conditions earlier when the pool becomes more utilized.