@3dluis not sure whats causing you to crash, i have had this problem and the only way i found to fix it was a clean install of unreal and MS studio.
@unit23 select your matinee and click play on level load, that way when you render it out it will play and record it for you. 150gb files are normal as-well, mine record at about 1.9 GB/s at 4k and 1080 is around 500MB/s