Hi,
Sorry that you are seeing this issue with CodeMix.
1. Is the slowness a recent problem or are you seeing it right from the first time you started working with CodeMix editor?
2. Is the issue specific to a particular JS file or other JS files in the workspace as well? How about the HTML and TS editors? Are they slow as well?
3. Please restart the CodeMix engine and check if it fixes the problem. Invoke Ctrl+Shift+P to open the Command Palette, type Reload CodeMix Engine and reopen the file in the editor area and check if it helps.
4. If the issue persists even after reloading CodeMix engine, then please share the gif/video capture to help us get a visual of the problem.
5. Please also share the OS and version details along with the .log file located in the workspace dir/.metadata/.log (rename the extension to .txt and attach it here)
Apologies for inconvenience caused.
–Swapna
Genuitec Support