Same thing happening with the latest update.

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I found a solution that worked for me: https://www.reddit.com/r/MagicArena/comments/1jv89ls/found_solution_to_massive_animation_lag_during/

Are there any updates on this issue? Is this under investigation?
Under some circumstances the game is near to unplayable with this lag, for example when you have a very big hand size and have to choose cards from there.
Also in the card overview when you press the filter button it takes ~15 seconds to load the filter screen.

Same! Since Aetherdrift Alchemy update the animations are lagging during game, more often at the start of the match. Even worse after last update. Before those updates game run perfect

Same here, really laggy only in gameplay. Changing resolution does not solve the problem.

Same. Also opening the Store or Filter in Deckbuilder is very very slow to open.
After some more games and performance monitoring my opinion is that it's network related not screen tearing or local cpu gpu ssd spikes noticed. only network and i have 1gb/s connection.

I have the same issue since last update, lot of freezes in animations and game is very slow to shut down.

I play on Steam, with RTX 4080, i5 13600k, 32Go RAM, SSD, ...

2025.46.00 game update completely broke animation. I can't event start a game any more, once I click play the game slows to a crawl just displaying the animated screen where you select what deck/game type you want to play. Frames of the animations are coming about once every 2 seconds. Game becomes completely unresponsive to clicks and I have to close it. I have a 4090 graphics card, 128 GB of RAM, and plenty of HD space. Everything was working fine before the update.

Additional Information: Using PC client. So far I only observed the problem during gameplay.