Too slow with big number of cards
Open
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1. to develop
enhancement
performance 🚀
- Dominant language
- JavaScript
- Stars
- 1.4k
- Forks
- 354
- Avg merge
- 1d 10h
- Merged PRs (30d)
- 43
Description
Describe the bug
Every action take too much time if you have big number of cards
To Reproduce
I have 170 cards on my board.
Expected behavior
Rerender have to be completed in less then one second
Screenshots

Client details:
- OS: Doesn't matter
- Browser: I've tried different
I've reproduced the issue in deck: 1.0.0-beta2
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
No file, test, or entry point is named. Reproduce the slowdown with a board containing 170 cards, profile the rerender path across actions, and verify that rerenders complete in under one second.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- javascript
- Domain
- frontend, performance
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100