Could you add a setting to lower the graphics to the minimum? (disabling the background of the map so that only the platform can be seen, disabling particles, etc;), not everyone has a good quality pc, it is just a suggestion
These are not details, they are also just static images that are part of what you walk on. If you disable the grass, the ground also disappears. I'm afraid there is nothing I can do to support hardware this old, I'm sorry. :/