IPR has a slow refresh on parameter changes

[leandro.cattani]

Hello,
when a I do a change in any parameter, the IPR doesn't refresh. I have to stop and restart the IPR render again. How can I speed up this process?
Thank you.

[Stephen.Blair]

What version of CINEMA 4D?

Can you post the header from an Arnold log so we know your system specs? For example, this is my Windows system:

| Arnold 5.4.0.0 [b7d9819c] windows icc-17.0.2 oiio-2.1.0 osl-1.11.0 vdb-4.0.0 clm-1.0.3.513 rlm-12.4.2 optix-6.0.0 2019/07/26 08:50:52
| host application: MtoA 3.3.0 66ec7254 (master) Maya 2019
| running on REMFDXQFB2, pid=126448
|  2 x Intel(R) Xeon(R) CPU E5-2650 v3 @ 2.30GHz (20 cores, 40 logical) with 32689MB
|  NVIDIA driver version 430.39 (Optix 60100)
|  GPU 0: Quadro K2200 @ 1124MHz (compute 5.0) with 4096MB (3283MB available) (NVLink:0)
|  Windows 7 Professional Service Pack 1 (version 6.1, build 7601)

[peter.horvath6V6K3]

Do you have the viewport open? The IPR is tied to the viewport and there's a known limitation that it does not update on changes when the viewport (editor) window is closed.

[leandro.cattani]

Thank you the replies. Yes, the viewport is open. I went to the Arnold's log windows but I don't have this kind of info. Maybe because I'm using a Mac?

[Stephen.Blair]

1. Click Render > Edit Render Settings
2. On the Arnold Renderer > Diagnostics tab, set the Verbosity level to Info
3. Render
4. Open the Console (clickScript > Console)

[leandro.cattani]

| Arnold 5.4.0.0 [b7d9819c] darwin clang-5.0.0 oiio-2.1.0 osl-1.11.0 vdb-4.0.0 clm-1.0.3.513 rlm-12.4.2 2019/07/26 08:44:56 C4DtoA | 00:00:00 1059MB | running on MacPro.local, pid=2179 C4DtoA | 00:00:00 1059MB | 2 x Intel(R) Xeon(R) CPU E5620 @ 2.40GHz (8 cores, 16 logical) with 24576MB C4DtoA | 00:00:00 1059MB | macOS 10.13.6 "High Sierra", Darwin kernel 17.7.0 C4DtoA | 00:00:00 1059MB | soft limit for open files raised from 10238 to 10238

[peter.horvath6V6K3]

Make sure the pause button is not active (next to the play button). Otherwise I have no idea why the IPR is not updating. Just to confirm, it's the case in a basic scene too, right? Like a Sphere and an Arnold Sky?