The s3d window in windows 11 has no scaling so everything is too tiny too read. There are two property settings that make it usable but they are both unacceptable.
1) Set High-DPI override at the application level in Simplify3D.exe properties. This fixes the application area nicely but the window frame is not fixed so the window name, close button, etc. are all tiny and unreadable.
2) Set High-DPI override at the system level. This makes everything large (too large) and everything is very low-dpi and fuzzy.