Graphic delay mixer

Hi all,

Maybe someone can help.

System:
Intel I9-13900k, processor is tested and good.
m2 drives
96gb memory
Radeon RX7600XT 16gb
Windows 11 latest updates
Amd latest drivers.
No bios tweaking
3 x 28" screens, 3840x2160, 60Hz, DisplayPort 2.1

Using Cubase Pro 13.0.50, Cubase Pro 14.0.5 and Nuendo 13.0.50,
and they all have the same problem with graphic delay in the mixer.

My project setup:
Project window, 86 instrument tracks loaded with Iconica Opus and BBCso.
Mixconsole 1, 30 group tracks for volume editing.
Mixconsole 2, 11 FX tracks for plug-ins

Settings:
edit - preferences - general -
HiDPI enabled
Application scaling -25%

This causes big graphic delay in Cubase and Nuendo.
What can cause this? Any help would be welcome!!!

Thanks in advance Twan