If you're using a Litespeed server, you'll want to enable the LiteSpeed WordPress plugin so you can add some exclusions. You can do this under the "Excludes" tab in the plugin settings. Add the following:
Do Not Cache URIs
Do Not Cache Query Strings
Note: If you are using the "Two Factor Authentication" security plugin on your site, we recommend trying to deactivate and re-activate once to see if it helps.