Incomplete export and lag when involving multiple export locations

Lightoom Classic 11.4

Windows 10, 64gb ram, AMD 5950x, All internal SSD, 3080ti GPU

Both myself and my wife on different machines have experienced incomplete exports.

Example:

Internal SSD Raw to Tiff or DNG, 779 files, only 755 completed the export

Also lag:

Exported Raw to DNG on one drive then immediately intiated the same files to another drive as Tiff. The first export thread worked fine but the second hung. It didn't export anything and then suddenly picked up as the cost of the first thread which then stopped.