Thank you this is very helpful. It is reassuring that most people are well equipped. I'm currently testing the final Full HD resolution for Bobo 2 and have already designed tiles, sprites, lighting, weather effects, day and night cicle and backgrounds for it. It looks like the final graphics will consume 20-27% of my GPU so it would be less than 75% for you. I decided to use at most 2 shaders per room. One for water/fire and one for background effects. Everything else is not worth neglecting potential players.
And I am happy that you collected all lives :)