1. Git™ integration in MATLAB tracks the status of every file under the Git project root location. This includes the .git folder, which maintains the revision history of the repository. A performance degradation occurs when the file/folder structure under the root is very large. If you are not using source control features within MATLAB, you can disable source control integration. a. On the Home tab, in the Environment section, click Preferences. b. In the Preferences dialog box, in the MATLAB > General > Source Control pane, select None.
2. If that did not help to resolve the issue, please check and see if the Current Folder window is open in MATLAB. This should show up along the right side of the MATLAB window and should show the files contained in the current folder you are working from. If the Current Folder window is open, try closing it. You can do this by either right-clicking the top of that window and selecting Close, or by selecting the down arrow on its right side and selecting the Close option at the bottom. Then restart MATLAB and see if you still encounter these slow speeds and lag.
3. You could also try to disable auto-refresh in the Current Folder browser settings from the preferences window. To do this, select the Home tab from the toolstrip at the top of the MATLAB window, and select the Preferences button in the Environment section towards the right. With the preferences window open, select the drop-down button next to MATLAB and go the Current Folder selection. Under the Refresh section, there should be a "Auto-refresh view from file system" option with a check box. If the box is currently checked, click on it to uncheck it. Then restart MATLAB and see if this helps with the issue any.
4. Additionally, please ensure that there are no network directories on your path. Make sure that all the folders and directories that you are working with on your path are local to you machine and are not network directories.
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