Plugins are a frequent culprit of issues like this. Depending on how you're tracking memory usage you may already be able to at least narrow down the culprit by looking at which process is using too much; plugins run on a separate process and may launch additional processes from there.
Unfortunately tracking individual plugin memory usage is not possible without invasive (and slow) tracing. If the plugins are causing big memory usage in the main process it can be hard to nail down due to that state being shared between all plugins.
Unfortunately tracking individual plugin memory usage is not possible without invasive (and slow) tracing. If the plugins are causing big memory usage in the main process it can be hard to nail down due to that state being shared between all plugins.