Skylight portal and 3D displacement

[R2J2]

It looks like when I use the skylight portal in conjunction with 3D displacement the Light cache times go through the roof, but is ok when I use 2D displacement
Doesn't seem to matter if I use simple or not, adaptive, store direct etc

Is this a known thing?
unfortunately I can't use 2D displacement on all objects because it doesn't support UDIM maps

[vlado]

This is odd; can you post a simplified version of your scene or send to support@chaosgroup.com ?

Best regards,
Vlado

[R2J2]

sent, Thanks Vlado

[Zdravko.Keremidchiev]

We received the scene and currently looking into it.