I try to optimize the game for as many as possible to play it. I provide several options in the graphic settings to scale according to hardware. There are always more things that can be optimized and i have a list of things i want to reduce the cost of a lot (player character, all armor pieces etc).
However this is still more or less in a state of find all the bugs (which is why it is free). I will continue to optimize as i develop the game and always do my best to make it easy to run.
That said there is also the reality of a visually advanced game such as this to exclude some players precisely because it has a high visual fidelity. While the game is a lot more GPU demanding than CPU i doubt many modern games today run on an old Pentium cpu and i can't really optimize for that without doing a pixel art game.
In summary, it's definitely something i think a lot about. It's the reason i scrapped using UE5 since the new tech, while amazing, runs slower even on newer hardware.
Always appreciate the feedback and if you have any more specific problems i can look in to i always welcome the opportunity as i only have one machine to test everything on :)