Media Helper Error - MAJOR workflow slow down

Hello,

I'm getting this error:

Exception: std::exception, what:[MainThread] Threads::SendThreadMessage: Thread message queue full PendingMediaHelper PendingMediaScanMsg

It's causing major timeline slow downs. Green dot effects now chug during playback. Every effect must be rendered and even then anything complicated will still cause a slow down.

Any suggestions on what I can do? This is happening on an older version of Avid (8.8.4). This is a work PC so I'm not sure if it can be updated.

Thanks!!!