agree, please do not drop it until completed, you would also gain some further motivation from it! and later you can present it as part of your portfolio.
sometimes I'm also fed up with 3dgs, but finally I can see there is no perfect engine to check other engines can be fun, also good as refreshment, so try them, and select the most suitable for your preferences, and decide what is the max money you want to spend. but it is practical to define some stages of develpment you want to reach, and when it is time to think of moving to another engine, which is not so easy. I also have a strategy like this.
but if you finally give it up, I would be interested in the sources, as I'm really interested in different pathfinders. but maybe I would not really understand it

always reinstalling a pc is too crazy, I hate installation so much why don't you make a full backup of your PC before 3DGS installation, and recover it? I think it should work.