IPR stuck constantly restarting render

[markus_s_cg]

Hi,

I have this issue where IPR rendering seems to restart over and over, flashing the screen both in VFB or in viewport IPR. I'm using max 2023 update 1 with Vray 6 hotfix 3.

Sharing a video recording of my screen here: https://vimeo.com/764124658/0cf03411a2

I've had a similar issue before in an older version. Then it was something related to 3d connection 3d mouse drivers. I tried uninstalling the 3dxware drivers now, but the problem was not solved.

[yavor.rubenov]

Hello,

Do you happen to have instanced cameras ?

Best regards,
Yavor

[markus_s_cg]

Btw is it possible to use Phoenix FD 4 with V-ray 6? I haven't upgraded to Phoenix FD 5 because I don't want to buy a product that is subscription only.

[markus_s_cg]

Hello,

Do you happen to have instanced cameras ?

Best regards,
Yavor

Aaah, yes I think I might have instanced my camera. I will test this right now!

[markus_s_cg]

...Actually no, there were no instances of the same camera. It also seems to happen regardless of using a camera viewport or a perspective viewport.

[markus_s_cg]

I have the same issue if I save the file backward to Max 2021 where I'm running Vray 5 and Phoenix fd 4. Only here it happens more slowly. The status at the bottom of the VFB switches between preparing the global light manager and rendering image pass 1.

[markus_s_cg]

I think it is somehow related to the OSL Cameramapping node in 3dsmax.