For some reasons, the command line parameters are not working for me with this game. I tried it through Ubisoft Connect and Desktop shortcuts, but they just wouldn't work for me. I tried -skipintro and -RenderProfile_MaxFPS 60 to be specific.
Topic on Talk:Far Cry 3
Did you try on the Steam version or UPlay version only? In Steam these do work, but commands on shortcuts doesn't seem to work anymore in Win10. One option is to add the game Exe into Steam library and add the command in there, no matter if it's UPlay version only.