I recorded about a week different kind of video from Forza Horizon 3 and came to the conclusion that I do not have 8 GB of RAM. With the settings in Bandicam, everything was fine, for a while everything is recorded perfectly.
What helped me - I turned on admin mode and compatibility with Windows 8 Bandicam. Also every time you log into the game and including Bandicam I set the high priority and priority real-time Bandicam. It saved me from a freeze, but after a while (about 30 minutes) had to drop the priority and to put anew.
Thanks to all who replied and suggested we have found a solution to the problem, install another 8 GB RAM =)

Hello Dannnnybb,

Thank you for your feedback.
We are glad to hear that your problem has been solved.

Thank you.