Hostas also require morning sun and afternoon shade, or dappled sun. I have them in front of some hydrangeas but eh, by this time of the year, they may be starting to look a bit ragged. Insects, pests, etc grab a few random bytes and leave. The heat or lack of water can "help" make them look burnt.

that's my problem, this spot is the opposite, very dappled sun for only 2 hours in the morning, then all shade until evening it gets mixed sun with some big splotches with full sun. its a tough spot, but my liriope is doing really well in that same spot too.