This is going to sound insane. But I am developing a perfectly good putt putt game with unity 2018 lts on a 12 year old laptop with 128 Meg video card. It's slow but builds work great. So far. For learning and small games it works well so far. And has a load of tutorials made recently by youtubers. But it is a bit confusing to work out what to use and what is to old to use code wise.