Originally Posted by Unregistered

I would bet that's Chrome or one of your add-ons blocking/deleting cookies. I "only" lose settings with most updates on Nutaku and never on DMM.

Definitely not, or I'd have to keep signing in whenever it loses the Nutaku cookie. It's just the game settings, and not even all of them (the "autorun" never stays selected, but the boss / battle speedup option usually does). The sound always turns back on, though.

It's the game itself losing settings, not cookies.