Same Backups but different lenghts

[onit122]

Hi, 

fresh installation of Backup Exec 22.2 on Windows Server 2022. 
Customer wants a classic 3-2-1 generation backup, so there are Monday-Thursday daily full, Friday weekly and monthly backups. All of them to tape (HP Ultrium 7), all new LTO tapes. Job includes 2 physical Windows 2022 Server in the same network segment, I tried with and without System State.

All 3 Backup Jobs are exactly the same, but why are there such big time differences, at the same job? It seems that sometimes stuck the job in a state where it cannot finalize the job.

[onit122]

Sorry, forget about the screenshot in the first post, here are 2 better one. 
In the first you can see the backup state, and second is the job history