# Unacceptable Performance **URL:** https://resource.dopus.com/t/unacceptable-performance/33604 **Category:** Help & Support **Created:** [September 25, 2019, 1:56pm UTC](https://resource.dopus.com/t/unacceptable-performance/33604 "2019-09-25T13:56:33Z") **Posts on this page:** 1 **Showing post:** 2
### Author: ![Leo](https://resource.dopus.com/user_avatar/resource.dopus.com/leo/32/69732_2.png) [@Leo](https://resource.dopus.com/u/Leo) #### Post date: [September 25, 2019, 2:37pm UTC](https://resource.dopus.com/t/unacceptable-performance/33604/2 "2019-09-25T14:37:22Z")
> [@Hazer](#): > > When it does not respond at all, sometime I see an error message about a thread. - What does the error message say? * * * - Does this happen in all display modes, or only some? e.g. Thumbnails mode but not Details mode? - If you are in Details mode, does it depend on which columns are visible? - Does it only happen in certain folders, or in places where certain types of files (e.g. video files) are present? - Have you installed any script add-ins? They can affect performance. * * * The type of issue you're seeing is generally caused by a conflict with a third-party shell extension that something has installed. These two guides can help track down the cause if that is the case: - [Crash, exit or high CPU when viewing certain directories](https://resource.dopus.com/t/crash-exit-or-high-cpu-when-viewing-certain-directories/1325) - [Crash, exit or high CPU when right-clicking certain files](https://resource.dopus.com/t/crash-exit-or-high-cpu-when-right-clicking-certain-files/1335) --- _[View the full topic](https://resource.dopus.com/t/unacceptable-performance/33604)._