The only way to do this is by creating a symlink(I came here to talk about just this)
- Close factorio
- Copy your script-output folder to another drive into another folder (Mine is D:\factorio\script-output)
- Open up cmd with admin rights
- Copy and paste the following without quotation marks(Or type it over changing your username directly) "mklink /J C:\Users\"your username"\AppData\Roaming\Factorio\script-output D:\factorio\script-output"
- Change your "your username" to what ever your username is(hint move the line over with arrow keys and press insert key(often labeled ins) before typing)
- Press enter
This will create a Symlink that works(Doing just timelapse folder does not work) and now every screenshot is written directly to that other drive saving your SSD from wear and tear hope this will help anyone who wants to do long timelapses.
If you do not want to deal with Symlink and cmd you can setup a robocopy, google Automatically Move Files From One Folder To Another On Windows 10 and change trigger from that example to "begin task at task creation" with the repeat setting of every 5 minutes for an indefinite duration but this results in a lot of wear and tear on your SSD.
Hope this can help you out with it