Commander Brackets and Large Deck Slowness

{"ops":[{"insert":"I'm aware that large decks (300+ cards) are generally considered not supported by the site. That said, previously this has just meant reduced features (no deck filters, for example) but overall still a fine user experience.\n\nRecently I've noticed extreme slowness with my larger in-progress piles, adding or removing a card causes it to freeze up, preventing other edits.\n\nThis started around the time of the commander brackets change and I believe they're related, particularly if two card combos are being checked. Changing my format to \"Custom\" and the lag goes away.\n\nChanging format is a usable workaround, but maybe we could disable brackets for large decks like we do for deck filtering? (The threshold here would need to be lower, I'm experiencing this at 260 and I'm not sure where it gets better)\nOr just in general a way to opt out without changing your deck's format, though I recognize giving an opt out could be a sticky issue when trying to get people to adopt the bracket system.\n"}]}