Music CD ejects from external drive before all music transfers.

I have a 2016 iMac with an Apple external drive. I use it to transfer music CD's to my music library. Occasionally, I get CD's that will not transfer all the music before it ejects from the external drive. I have OCD with my CD's not having scratches, that that is not the issue. And, it is not just a single CD. I have had this happen to several CD's. Sometimes it transfers all but the last song on the CD. Sometimes it gets halfway through the songs. Sometimes it ejects from the first song. There are times it takes me almost a dozen times to get problematic CD's too transfer all the music by trying several times. Each re-try, I unselect songs that already transferred to help get the rest of the songs transferred to my library. Could this be an issue with the external drive since it has happened to different CD's over time? I have the following selection already checked “Use error correction when reading Audio CDs.” 

Thanks for the help!