I don't know what happen but I had had not the possibility to work fluid with a second monitor as preview. Every time I try to rippler a clip, my main monitor seems a flash. And to move a clip become too slow by 3 or 4 seconds.
I tryed many driver versions. HP and AMD.
THANKS
HP Z440
BIOS 2.41
WINDOWS 10 PRO 64 BITS
XEON E5-1680 V4
64 GB RAM
M.2 HP Z TURBO DRIVE OS
SSD CRUICIAL MX300 1TB FILES
RADEON PRO WX 7100
700W POWER SUPPLY