Serif's Affinity Photo is a direct competitor to Photoshop. It offers a (around $70, often on sale). It has a modern engine, handles huge files, and supports PSD compatibility. It is far safer than any patch.
— Consider:
If Photoshop CC 2017 won't open on a newer OS, try running it in : Right-click the Photoshop icon. Select Properties > Compatibility . patch adobe photoshop cc 2017