Thank you so much, the SF_CharFrameGuard_MZ.js seems to be working great, no more spritesheet blinking on web browser for now, as for the Compat_DotMove_PKD_DotMove.js It doesn't solve the QJprojectiles crash issue when changing maps but maybe it's not related.
For the loading issue, the fix is to replace the first block by the second directly inside the Animation Solution right ? 
I'll credit you and send you a copy of the game as soon as a playable build is released, thanks again for sharing your work on theses fix.