I haven't changed any of the defaults since I just installed the product, It is currently setup as you say, to only use advanced heuristics on created and modified files under advanced options, and not checked under executed files which is the default.
I do have some related questions after reading this section of the manual which may be impacting performance. In the ThreatSense Engine Setup, why isn't Advanced Heuristics checked under the options tab?
It says, Advanced heuristics – Advanced heuristics is comprised of a unique heuristic algorithm, developed by ESET, optimized for detecting computer worms and trojan horses written in high-level programming languages. The program's detection ability is significantly higher as a result of advanced heuristics. Since I'm scanning a very large number of files, should I increase the cached size? It also says, "Files are scanned again immediately after each virus signature database update." Does this mean when a new virus signature is released each day (usually), all of my files get scanned again? I can see the importance here if a new virus is being addressed by the signature and Eset needs to make sure that the new virus is not in any of my files. However, when is this done? It sounds like tremendous overhead, almost as if it's running a new scanning job on all of my files but just checking for the latest addressed vulnerabilities in the virus signature. Also my files were being modified multiple times as they are music files with meta-data being updated. For example, a new album could be inserted into the song file. Plus any other information such as album year, songwriter, title correction. It literally could be making 25-50 modifications on just one music file. Does this mean for each modify it is being scanned again since modify is set under advanced heruristics? In this case would a larger cache file make a significant difference in performance? For example, if it's not in cache has Eset gone to disk to retrieve the file? Finally in earlier products you set the nesting level to unlimited and now it's a value of 10. Under what circumstance would I consider changing to a higher or lower nesting level value? Thanks again for your help.