Hi
How long have you been using slickedit for?
How long have you been using slickedit to edit this file for?
Do you notice the slowness as soon as you start editing the file or only after a while.
Do you notice slowness on any other files? If not, try an experiment, copy the top half of the code to another file and see if it's slow there, if not add half of what remains and check again, repeat until slowness turns up.
Does the file belong to a project, if so how big is the project and how big is the tag file?
Last thing to try, run slickedit with a "clean config" - vs.exe +new -sc some-empty-folder - then don't open any project, just open the one slow file and see if it's slow.