While it's true that fractional scaling works differently on Linux and Windows, it's my understanding that many apps don't handle scaling well, or at all, over

While it's true that fractional scaling works differently on Linux and Windows, it's my understanding that many apps don't handle scaling well, or at all, over there. Meanwhile on macOS basically any app scales properly - I think I have never seen one that doesn't. You can use fractional scaling on a mac, but in that case your whole output will be rendered in 5K and scaled down to the target resolution, which is of course an intensive task - I wouldn't recommend it and instead always use true 2x scaling.