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Participant
July 7, 2025

Dreamweaver 2021 slow or laggy with PHP files

  • July 7, 2025
  • 3 replies
  • 167 views

It's been months now that dreamweaver is laggy when typing on code view on PHP scripts. I have tried disabling all code hints, made static view default, disabled code coloring.... still laggy.

If I type random chars it freezes for about a second then shows everything I typed at once every second.

Any key I press takes about 50ms to fire.

Double clicks (to select a word) usually won't fire.

The whole app randomly freezes some times (if a PHP script is opened).

DW process uses under 1% CPU. Plenty RAM available. Installed on a SSD drive as the whole system.

3 replies

Nancy OShea
Community Expert
Community Expert
July 16, 2025

Live view also adds latency to PHP files. It also prompts you to Save after each edit.

When that happens, toggle from Live to Design with Ctrl + Shift + F11. 

 

Nancy O'Shea— Product User & Community Expert
Participant
July 7, 2025

Wow! Resetting preferences just did it!

I'm using windows 11, the website was on a SSD drive, but the same behavior was happening no matter where the file was.

 

Thank youuuu ❤️

Community Expert
July 7, 2025

Is the site on the SSD drive or is the site on a network/cloud storage when you are editing it? What OS? Have you tried resetting preferences ( https://helpx.adobe.com/dreamweaver/kb/restore-preferences-dreamweaver.html ).