Sequential file copy not using queue

Running 12.30 Stable and no idea why all of a sudden file copy is not going into queue and just runs like "eek" windows explore (in parallel)

Can't find the setting in preferences/file operations.

Any help would be appreciated.

Alfred

The options are in Preferences / File Operations / Copy Options:

Most likely you just need to turn on the Automatically manage file copy queues option.

Thank you so much Jon for your super quick response. I will test it out. (not sure why I didn't see that before, I guess I was looking for something that said sequential)

Thanks,

Alfred