Hi @TIZIZ!
Do do a little math: you need to go into loop 99623 times. Lets say 1 loop execution (1 column) takes 1 second to execute. That means the whole loop takes 99623 seconds to execute. Divide it by 60 and it is 1660 minutes. Divide it by 60 again and you get that execution lasts more then 27 hours
Here is a link to another forum thread about speeding up your workflow:
Lp,
Ivan