Subtitles and CIH

I have been toying around with the idea of buying a new projector and changing to a 2:40:1 / 2:35:1 screen. I stumbled across a Constant Image Height(CIH) thread in a different forum where subtitles weren’t visible on 2:40:1 / 2:35:1 displayed content. Anyone here have the same set up and have repositioned the subtitles to the top of the screen solving this issue?