Why does it take a long time to open large files on some systems?
Regarding large files, UltraEdit handles files in excess of 4GB. UltraEdit is disk based. This means it only loads small portions of the file at once into memory so it does not use all the memory and stop other applications from running. However, it does make a temporary copy of the file to achieve this and this can take time for large files. There are several options you can change to optimize the handling of large files. More information is available at our large file handling power tip.