Skyrim SE in Japanese was apparently downgraded with the AE update?

[faffman]

Entirely coincidentally with the impending AE update, I recently set up Skyrim in Japanese with the goal of using it for language practice. I couldn't get SKSE to work with it though, and I found out the reason was that the latest Japanese version was not the same as English; up until the AE update, the latest version was 1.4.4.0. This led to the decision not to play modded at all, not even with the unofficial patch, and to go achievement hunting, just like the old days.

 

Enter yesterday, when the AE update arrived. Despite launching the game from Vortex, I could not stop the AE update, likely due to not using SKSE. I paused the update about halfway through and backed up what I'd been informed were the most necessary files, just in case I'd need them, but ultimately, the update finished. After the update, I noticed these files weren't enough, and now I wish I'd backed up the entire game folder.

 

Playing the "updated" version, I noticed the game was more glitchy than prior to the update (I can mention what bugs I've encountered if it helps), and my PC was working harder and getting hotter despite using the same settings. After checking the current version number, to my surprise, it was 1.1.47.0. I don't know anything about game developing or programming, but wouldn't this number imply the current version is older and more outdated than what I played until yesterday?

 

Needless to say, I am not happy with this downgrade, and I was hoping to find the means to get the previous version back, but even together with my more computer-knowing gf, we aren't sure what to do.

I realise this problem is rather uncommon, and perhaps not relevant to a modding site, but can anyone shed some light on the situation? Worst case scenario, I have to either keep playing this glitchy mess, or go back to Oldrim, where I've already unlocked all the achievements.

 

Additional information: I don't have my own copy of SE, my gf has shared her library with me, but if needed to fix the problem, I'm willing to buy my own copy. But I'm not buying AE (especially since the Japanese version isn't even released yet.

 

tl;dr; Playing SE in Japanese without SKSE or mods, and the AE update downgraded the game from 1.4.4.0 to 1.1.47.0; now it's glitchy as balls, and I want 1.4.4.0 back.