Hmm, do you open the "Warcraft III Launcher.exe", or "Warcraft III.exe"? Because you should open the latter, always. And do not try BNET.
EDIT: Also, if you ever had Reforged on your PC, uninstall it and delete registry of it. Only then extract your 1.30.2, and activate it.
If you do this, then I honestly have no idea, because I use version 1.30.4, and it runs just fine, except for one little thing, that started a couple weeks ago, while I was meddling with stuff:
Honestly, it doesn't look half bad

. Anyways, the cinematics, and gameplay (including Editor) run nice n smooth. *shrug*