Build 502 - Incredibly long times updating material editor

[PIXELBOX_SRO]

Hey,
even something as simple as changing the multiplier value in HDRI map takes over 2 minutes.
Clicking between nodes takes forever too.
Any known issues in this build in that regard please?
MAX 2020
Cheers
M

[PIXELBOX_SRO]

Sorry this belongs to vray5 forum i will make the post there.