Rarely used and lower quality card sets, backs, backgrounds were removed from the game. Now the game will take 40% less space on your hard drive. You can still download all content from our Discord server: https://discord.gg/YgzCQNbnzT. EDIT 2023.10.07: size further reduced to 450MB. NOTE: when you import backgrounds, make sure you check the Max zoom in checkbox in Advanced options:
For in-built backgrounds, the game applies "Max zoom in" to display them full-screen.