Yeah, there's some bits that run a little slow, and the countryside levels get laggy in places.
This is my first game, and over the last 8 months of working on it, I've found a lot of stuff on how games should be built. The update that's being worked on is pretty much taking all the individual bits that have been put together without knowledge of how it all works and integrating them into something that should run a lot smoother, hopefully with a smaller filesize and make it easier for future updates to be slotted in. Plus a lot of the individual mechanics that have been added were done without knowledge of similar better systems.
For example all the animations in the game were done by hand, which means the characters animations lets them go through solid objects. Since then I've learned about control rigs and IK systems in Unreal which would allow characters to actually interact with the ground as they walk on it or use scenery for interactions.
I've been learning as I go, and unfortunately part of the learning process is discovering that the things you did right at the start were not what you need going forward. Rather than continuing to cobble parts together, the rewrite should make future stuff way easier to implement.
There's a full list of Phases with features that I'm planning on adding here: Trello