Multicam Clips flicker between black screen and video in angle viewer after update to FCPX 10.2. What is wrong?

After updating to the latest version (10.2) It frustrates me really much that my mulitcam clips can not be played properly in the multi angle display, either as event or timeline. It all just seems dull, slow and outdated.

It either flickers between a poor view of the desired or just black screen. Sometimes it helps to press pause - sometimes not.

I'm sad, as I have loved to work with multicam clips. We are under pressure from deadline, so if there is anyone out there who has experienced the same, has a solution or an idea, then I will be happy for a solution and an answer 🙂

All the best

Martin

iMac (27-inch, Late 2012)

3.2 GHz Intel Core i5

24 GB 1333 MHz DDR3

NVIDIA GeForce GTX 675MX 1024 MB