Same. I'm running this game on a modest beast of a machine too. I checked the devs patreon page and it would appear that the latest version available there is the same as the latest available here for the 10$ donation.
I really want to give this dev praise because I'm impressed with what IS working but right now I'm more impressed with the features I thought were in store with my purchase.
Edit: Actually just noticed they ARE different versions. While I can understand not getting the full suite of features for providing a one time donation as compared to providing a monthly contribution.
I can't understand providing me a broken version, quite possibly no better than a demo. In fact I would consider that the case. 0.2.7.d it's "d" for Demo, not Donation.
For the version numbers, I think the dev also uses letters to denote a minor version without changing the 3rd number.
Anyways, the version I downloaded in November had major performance issues on my machine. I have an Intel i9-10850K and an Nvidia RTX 3080 Ti and this game was using over half my VRAM and GPU utilization. I didn't expect it would tax my machine as much as it did for a game that isn't moving through a full 3D world all the time.
The developer said they would be looking into the performance issues I was having.
It would also be nice if some basic sex sim stuff could be working sooner than the story [like the buttons for different sex styles].