Text Find / Replace RegEx Performance

I am using the Text Replace step with Regular Expression.

I am trying to replace ((?s).*?CUTHERE\*\*\/) with blank space but the step has been running for over 20 minutes using 50% CPU on a dual core system.

It's a 1mb .SQL script file so I don't think it should take that long... I'm simply trying to remove all the lines from the beginning of the document to the line that is /**CUTHERE**

Even if I signal a Stop, the process will continue to run. If I try to close FinalBuilder, it says it needs to end the build, but FinalBuilder continues to run the step at 50% CPU and never closes. I have to kill the process.

Please see my reply to your other post on this topic.