When testing upgrade from SMP 7.5 to 7.6 I have realized, that SMA 7.6 package is larger than usually,
It used to be around 15 MB and now it is over 45 MB.
I have verified content of that package, which is located at NSCap in Win32\X86\NS Client Package folder:
I could see that this folder actually contains three 15 MB installers, from which actually only one is used to upgrade particular SMA:
AeXNSC.exe -s -a /s /install/platform=x86
When planning upgrade, consider customizing that package to contain only SMA installer you need.
That way you can reasonably save on your networks, and speedup client upgrade.