I use several computers and Firefox everytime. I have no issue with Windows7, but my only computer with Windows10 has the same issues than you...

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I almost forgot I still have the loading issue, whatever my computer, sometimes in FKG and very often in Kanpani Girls where I have to reload the game 3-5 times each time I play on the Battlefield...

No issues on my end when using Goolg echrome or Fire Fox.

The only Nutaku games that lag 4 me: Aigis, Brave Raven, and Sengoku Providence

Games that crash: Aigis, Brave Raven, and Sengoku Providence

OP: Hmmm, wonder what the problem is if other people or some computers aren't having the same issues with same O.

But just now, I decided to "roll back" Firefox. I downloaded a folder for 50.0.2 from Mozilla, and the .exe file opened that version's Firefox window without installing anything. When I go to FKG, everything is back to normal, no more graphical issues. So maybe I'll just use the old stand-alone version only for Nutaku games.

Except I don't have enough stamina yet to see if the loading issues persist. If the loading problem continues, I'll update here.

I still have loading problems. Can't even play any missions at all. I may have to skip this event because of it.

OP: Ok so I had 2 full bars of stamina to try out tonight on the rolled back Firefox. I haven't had any loading issues after "rolling back." So my problem I'm pretty sure was due to the Firefox update. It's weird that other people don't or do have it, and are using Firefox and other browsers. Maybe there are different causes but similar symptoms.