The more frequently EmEditor checks the user input, the slower EmEditor becomes.
To reproduce the issue, how big is a typical file? How many lines in the file, and how many files in a folder?
What is the search string and options (regex or not)?
How many seconds or minutes do you have to wait?
Do you search a local hard drive, SSD, or network drive?
Please also make sure that your hard drive is healthy by using “chkdsk” command.