The .3x versions were the last ones before they put in abstraction layers for video and sound, which had a lot of benefits, but adversely impacted performance o

The .3x versions were the last ones before they put in abstraction layers for video and sound, which had a lot of benefits, but adversely impacted performance on low-end hardware of the time. On modern hardware I don't think it is really an issue, particularly for games from the 80s and prior. Raspberry Pi 4 works just fine.