I've been trying to take advantage of the spikes myself. Pretty interesting seeing the pattern, every couple days at midnight utc it spikes. There is a nice trend line building.

Yield is a lagging indicator by definition. APR itself is YEARLY, as in the number doesn't materialize until a year from now. As number goes up we should be considering lowering the yield even further during the good times so that we have runway to jack it up during the bear when everyone needs a win. Buy low sell high.

That make sense in the lowering the APR as the Hive price rises. I think it could be a thing coded to the core rather than an option for the witnesses to choose so as Hive hits varying price metrics the APR would automatically change. We have many years now of data to work off of.