The event log in the dashboard is prone to this problem regardless of the model or device type. You're bets option IMO is to set up your own Syslog server on site and have the MX send logs to that device.
@Tatah My immediate suggestion would be papertrail cloud. However, you should do some research as to your initial setup. For instance, I send each of my networks to a different syslog server inside of papertrail. In my experience this has worked way more efficiently as it separates all the data for each instead of having to search one server for all networks.
If you have any questions on setting up syslog this will be your go-to step by step guide from Papertrail.
- When it comes to upgrading just for the dropped events. My opinion is to hold off until you do your Root Cause analysis. There may be a symptom inside of the MX causing all the events to crash or it could be firmware related. Recently one of my MX's had a simmilar issue of events dropped (in the thousands not millions). The root cause for me ended up being the cell card looking for a connection. Once I removed that it was good to go no more errors.
Good luck and hopefully this helps
