CC 2018 High Sierra, problems with everything... literally.

[adriaw17030514]

So I upgraded to cc 2018 and I have os high sierra. Firstly... Photoshop wouldn't open the 2017 files so I followed some instructions to "force" it to open in PS 2018. That was fine, still won't open reliably, is slow as dirt, and frequently has the CEPhtml. issue. Which I sort of fixed by not having the library tab open in any program. Lightroom has trouble opening, PS, AI and ID. All are just trouble!!!! Can I go back to 2017 and will that fix my problem? I'm hesitant to start trashing my prefs...

Help

thank you!

[kglad]

trashing your preferences should be done.  you can rename them so they're easy to restore if that's not the solution.

[adriaw17030514]

Thank you! There are numerous settings for different versions PS 2015.5, CS5, PS 2017. Trash those as well? And do the same for LR, AI and ID?

[kglad]

just the problematic ones.