Element keeps complaining that my homeserver isn't "Matrix 1.5" yet.

Yeah, because I DEFINITIVELY want this amazing experience again of running freaking Synapse. X.x The absolute epitome of "Python eats your system if you let it", seriously. Java has flags to control memory allocation and can effectively OOM itself on those limits - but Python does not, and Synapse will eat every single buffer in your RAM, should you dare to join a room with more than 100 people or 10+ different servers involved.

Not even kidding..