I have searched for this seemingly simple info, but cannot find it. What is your definition of "large memory" which appears as one option for launching LrT 4.1 on a PC. There are several options for launching LrT.
I'm using Win 7 64bit.

There were similar options in Lrt 2 & 3 but I never saw an explanation.

Thanks!

In 99% of all cases, the regular "LRTimelapse" launcher is the right one. The other launchers are basically for troubleshooting, if you don't have problems, just ignore them.