Recommended archive limits

We occasionally have problems with large archive files failing to download properly (Oracle installers, primarily) because the scanning of them takes too long and the file copy operation after the download finishes times out, causing a write failure. I assume that playing with the archive limits on the real-time and HTTP scanner is the way to go and I should do it by setting a limit to "Maximum scan time for object (sec.)", but the help file doesn't tell me what the default is so I don't really have a frame of reference to what I should be trying. Can anyone give a little input on their experiences?

 

10 - 20Mb possibly or anything in between, see 2nd post
https://www.wilderssecurity.com/showthread.php?t=272956

 

I was thinking I would start out at around 100mb and whittle down from there, since these are typically archives in the hundreds of megabytes and nested in multiple archive types. Thanks for confirming that I'm not completely out of the ballpark.