My game is big. runs just fine when exported with nw.js. But preview mode is running worse and worse, the bigger it gets. including nw.js preview, doesn't work, even though exported version does. For the longest time firefox was the only preview browser that worked out of all the options available. It still works but it's getting worse and worse and crashing more and more. Often it also opens up with no sound, or turns graphics into black blocks. Tried using custom option for seamonkey. It worked, but was just as bad as firefox.
Is this possibily one of the TC's aforementioned problems with HTML5?