I have Adobe CC installed on a fast SSD, Photoshop startup is usually done in a few seconds, but lately is taking around 2 minutes in the “Reading Preferences” start stage.
I have done every existing throubleshooting recommended like resetting or deleting Preferences folder and files, manually, or trough Ctrl+Alt+Shift option, I have unistalled and re-installed, etc. but the problem persists like if CC were back in an old and slow mechanical HDD.
@Jeffrey Tranberry I found out that my Styles preference was actually corrupt. I deleted the preference and now when Photoshop starts, reading Preferences only takes about 3 seconds instead of 50 seconds.