[Darryl Ramm]

You find out if a plugin is causing a problem. If so then you leave it uninstalled and contact the manufacturer.

Maybe it is not a third party plugin and you find that out quickly and move on knowing you have greatly reduced the problem space. And I have already suggested next steps beyond that...

Just go do it. It may come as a shock but systematic debugging tends to help solve more problems than complaining about things.