What are the problems you’re running into with memgraph?
The biggest headache with neo4j is dealing with java garbage collection, but that’s not an insurmountable problem, just a bit of a learning curve. Other than that I’ve been happy with it. Getting a list of followers is instantaneous, something unthinkable with sql. Finding the shortest path between pubkey1 and pubkey2, is also pretty much instantaneous, even when they’re 7 or 8 hops away.