Yes damus use to use coredata for our profile database. It was extremely slow and had many race conditions and contention issues. Switching to nostrdb made profile search so much more stable and faster. It’s actually live on the appstore version. The remaining work is replacing in-memory and from-network notes with nostrdb. There is a lot of duplicate work that is happening atm because notes are processed twice. So the perf boost should be substantial. I am also going to rework timeline ui rendering so that it’s not as slow, as that is the slowest part of damus atm.