Some old-timers claim compressed games cause lag or stuttering. That is a relic of 2010s CPUs. Modern processors (even in budget handhelds like the Anbernic or Retroid Pocket) can decompress CHD on the fly faster than the original PSX’s CD-ROM drive could read data.
A game that traditionally has one .cue and multiple .bin files is consolidated into a single .chd file. This eliminates the clutter in your ROMs folder and simplifies navigation. chd psx roms exclusive
Practical Steps for Legitimate Use