Hi Alex,
Thanks for this video.
Please check if something in your preferences has changed:
Screen Shot 2024-01-14 at 4.11.25 PM.png
https://help.maxon.net/c4d/2024/en-us/Default.htm#html/PREFSNAVIGATION-PREF_NAVIGATION_MAIN_GROUP.html#PREF_NAVIGATION_CURSOR
Just a hunch: If changing the preferences will not help, someone else reported here in the forum problems while using the Redhshift 3D camera. Would you mind testing a scene set to standard render and see if that changes the outcome?
Thank you very much