I have had no joy with getting a scan to complete on a LiteSpeed server either. The first few times it was doing about four things at once (core, themes, plugins, malware) but not saying anything about progress with files in the details. By telling it not to do themes or plugins and various reducing the execution time to 15 seconds and playing with both increasing and decreasing memory size I got it to tell me it was scanning files and eventually it built up to 1400 files but that is it. There are no errors to be seen anywhere that I have access to, it just seems to stop making any progress.
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