We are planning to look into Collaborate. We had a similar feature in our custom made ERP system before Epicor and it was a great feature. People could comment / ask questions / leave notes on tasks etc. It made for an easy to use way to collect and record valuable information. That information is now in Teams or email and not easily linked to the job/part/PO/etc.
In terms of performance, as long as you are not expecting real time chat like Teams as it is not a chat client then a suitable performance should be achievable I would expect. Interested to hear how it goes for you.
Brett