I have 3 Bradley's Bahamian (frutescens) x bhut crosses that were suffering in full sun. The biggest plant would wilt all day and wasn't growing and the 2 smaller ones got very bad sunburn after having seemingly been hardened off for weeks. Now that they are in a mostly shady spot they are looking much better and the biggest is starting to take off. They have big, soft and very dark green leaves which may better for shade. As for pure varieties, I have a datil and a Peruvian chinense also doing pretty well on the edge of the shady area. My tepin overwinters are wilting in the sun on hot days so might move them as well.
When I lived in the tropics, the plants that did best in full(er) sun were goat's weed, Fresnos and some Caribbean chinenses (congos, aji dulces). Most of the other plants, including bhut-types, had to have a little more shade. I know Tabasco did very well in the heat of the day and wouldn't wilt much as other plants, but I think it was partially shaded and I kept the Aji Limon Peruvian Yellow baccatums in the shade as well.
- Tick