It's not like I wanted to.
The unreal 4 build was worked on by our first programmer. Unfortunately we had to let him go due to multiple reasons. We then brought on Fronk to work on that particular build. It was almost impossible to upgrade or optimize. A lot of people were also experiencing caching issues leading to the white screen issue. We ended up contacting an assistant programmer, who would be working with Fronk to get things out fast. This programmer recommended unreal 5, in which case we started rebuilding the game from scratch in unreal 5. Things took much longer than expected, and this assistant programmer was often MIA due to having other work. Leaving Fronk in a new engine he was learning as he went. Not a good situation though some erodevs would probably be completely okay with this.
We decided we didn't want to have a 8-year development cycle, as such since Aquapaulo, Janniqz, and myself all have more experience with Unity we switched! While In heat would need to be developed again in a new engine, we would have a much faster development cycle afterward.
Overall even with the bugs of the demo, I am the happiest i've been since the first version came out.
This is a repost, but is pretty much the situation.