Invisible riders and low frame rate bug

Twice this week I have entered the pens for a race only to find the game suddenly running as low as 1fps and bikes with no avatars. I believe this was the bug that as supposed to have been fixed in the recent updates. I’ve recently switched from using an iPad or an old iMac to a new laptop that is much more capable and this is the first time I’ve encountered this. Normally, this machine runs the game at 60-70fps.

Anyone got any suggestions on how to prevent this happening again?

I actually caught it on my stream too.