java loads fast but is VERY laggy in singleplayer (you cannot play with a render distance of 9 or higher without mods) bedrock runs well but takes WAY too long to load (10 minutes to get to loading screen, 20 more minutes to get past loading screen, 5 more minutes on "Loading Resources", and an extra 2 minutes to get into a world)
and apparently the switch version barely runs (basically no fps with the same horrendous loading times!)