final cut pro x in my new mac pro (bought yesterday) is going slow...

it stops loading

once i try to put anything in timeline(the main task board)

the line stops going and the sound goes on

the background window shows something is going on (it stops soon)

after all, every task stops, every keyboard and trackpad doesn't work

only the sound goes on.

i bought a new one due to this issue thinking my previous one (2015) is old.

i am now guessing that is not because of the oldness.

what is happening between the program and the computer.

how can it happen just 2 days after buying it.

i hope anyone could help. thanks. stay safe.