Unsure what save or open dialogs you mention but if that's the file selectors in other desktop applications that's not nautilus but probably gtk (or another toolkit, depending of the application you are using)
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to nautilus in Ubuntu. https://bugs.launchpad.net/bugs/1934520 Title: Nautilus very slow to start after 20.04 upgrade Status in nautilus package in Ubuntu: Incomplete Bug description: Nautilus takes up to 50 seconds to start, even in save or open dialogs. Attached is the output for time strace -y -f -t -T -o /tmp/nautilus.strace2 nautilus --- ProblemType: Bug ApportVersion: 2.20.11-0ubuntu27.18 Architecture: amd64 CasperMD5CheckResult: skip DistroRelease: Ubuntu 20.04 InstallationDate: Installed on 2017-08-11 (1421 days ago) InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412) Package: nautilus 1:3.36.3-0ubuntu1 PackageArchitecture: amd64 ProcVersionSignature: Ubuntu 5.4.0-73.82-generic 5.4.106 Tags: focal Uname: Linux 5.4.0-73-generic x86_64 UpgradeStatus: Upgraded to focal on 2020-04-27 (431 days ago) UserGroups: root wireshark _MarkForUpload: True usr_lib_nautilus: dropbox 2020.03.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nautilus/+bug/1934520/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

