We are aware that the latest 6.6 version has a number of issues and are looking into it.
In the meanwhile, if you are using Vue 3 + Vite, consider using devtools-next instead. It is being more actively developed. For now it is only available as a Vite plugin or an Electron app, but will eventually replace the current extension in the future.
Update: current Devtools 6.6.3 should have addressed the memory issue in 6.6.0~1, please report here if you are still running into memory issues / crashes with 6.6.3.
We are aware that the latest 6.6 version has a number of issues and are looking into it.
In the meanwhile, if you are using Vue 3 + Vite, consider using devtools-next instead. It is being more actively developed. For now it is only available as a Vite plugin or an Electron app, but will eventually replace the current extension in the future.