Cryptomatte Nodes slow down UI in the compositor

Hello everyone,

I have now painfully found out that the Cryptomatte nodes in the compositor make the UI extremely sluggish. But only if you set it to “Image” and use an image sequence with relatively large files (15MB and more). My impression is that - unlike the Image Input Node - the Cryptomatte Node is constantly accessing the disk. The whole thing becomes so slow that it is almost impossible to continue working properly.
Has anyone had this experience too and a solution for it?

Many greetings
Dennis

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