Bug in Photoshop concerning adjustment layers, Photoshop v 24.4.1, Macbook Air M1, 8 core, 16 GB ram, sufficient free SSD space.
It's not the first time, Photoshop gets slow after updates. It got again comulative worse since v 22 or so.
Draging the points on the curve adjustment layer is almost impossible. Jerky and laggy, slow, slow, slow, unusable. The image is not so big, 16 bit ProPhotoRGB loaded, but cropped from a 24 megapixel camera.