Because it’s running from a USB drive (which is slower than an SSD), here are three tweaks:
If PSP 7 crashes when opening large (3000x3000px) images, download the “4GB Patch” tool (a small utility that modifies the PE header). Apply it to PSP.exe . This allows the 32-bit application to address up to 4GB of RAM instead of 2GB, drastically reducing crashes.
Originally released in 2000, PSP7 was the final "pure" version before Jasc Software was eventually acquired by Corel in 2004. The acronym