How to solve paintbursh is too tick?

For Windows

1. Input %appdata% on the File Explorer Address Bar and find CamIn folder.

2. Rename the folder(like camin1).

3. Relaunch CamIn.

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For macOS

1. Go to [Finder]-[Go to]-[Go to folder], and then input ～/Library/Application Support/CamIn.

2. Find a folder named with numbers.

3. Open this folder and delete the .edb files.