Well, yeah. Comparing the same "Honey select" that Illusion Soft makes (though I don't know how many people work there) and they kind of make money from it and "IslanDeity" that ONE person makes as a hobby (they won't give much money on Patreon anyway)... It's a strange comparison, isn't it? Compare it to Ubisoft, damn it.
The game depends on the computer hardware. One works badly, another has AMD... The third one is fine . Does the optimization suffer? Maybe. But the game is in development. That says it all, I think. It started, didn't explode - half the job is done

The developer does the best he can. We play as best we can. If we can. We describe bugs. What's next? Nobody knows. All questions - to the developer.