for the last month or so acrobat has been slow to the point of being nearly unusable. on start up, it keeps going into a nonresponsive state while trying to scroll through recent files before even opening one. once open a simple text only the file will lag as though it was massive. I don't think it's related to PC resources as this will occur with nothing else open and I am running, 128GB ram, 4.2ghz 32 core processor, and 2x rtx2080 video. I've tried all the normal troubleshooting, clean install, checking updates for both adobe and windows and video card drivers, resetting preferences etc. Version 2022.002.20212 64bit (I had to fight through over a minute of freezes and the spinny wheel just to open and go to about to see the version)
Or you may also want to clean the following folders manually (just for troubleshooting purposes):
delete all temporary files in : C:\Windows\Temp
C:\Users\"your current User account"\AppData\Local\Adobe\Acrobat\DC\ThumbCache\Acrobat\Files
C:\Users\"your current User account"\AppData\Local\Temp
C:\Program Files (x86)\Temp
C:\OneDriveTemp (or any other cloud services temp folder that your Windows might be currently using (if any)
NOTE: That "AppData" is a hidden folder so you must enable show hidden files in File Explorer.
You may also want to examine any crash logs in:
C:\Users\"your current User account"\AppData\Roaming\Adobe\CRLogs\crashlogs
After you clean all temp folders, a reboot may be necessary. I would recommend that you compare how the Acrobat program behaves when you completely unplug your PC from the Internet and compare if sluggish symptoms persist when you're online.
That said, you should check in "Preferences" -->> "Adobe Online Services" and see if disabling ""Sync preferences accross devices and document settings" do any difference with the observed performance. And also in preferences --->>> "Trust Manager" and modify the current default to "Never" in the section that is labeled "Unless explicitely permitted, PDF files cannot send information to the Internet "
Sometimes, and regardless of hardware and software specs, your system could potentially have other backgrounds processes interacting with the OS, a cloud service, Acrobat, anti-virus, unnattended peripheral updates, etc.