@RogerS, I made a new post as you recommended.
The situation is as follows: I loaded the footage into the software and started editing. At some point, without doing anything special, it got blocked and you know the message very well "not responding".
This is my computer:
Workstation DELL Precision T7810
Procesor: 2 x Intel OCTA Core Xeon E5-2667 v3 3.20 GHz (3.60 GHz Turbo, 20MB Cache)
RAM: 64 GB DDR4 ECC (8 x 8GB)
500 GB SSD Samsung 870 EVO nou + 2 TB HDD
Video: nVidia Quadro M6000 - 12GB GDDR5 / 384 bit / 3072 CUDA Cores
It's a good setup for editing.
thanks for help