I noticed a severe difference in pre-render times for viewport rendering between different blender versions, see table and system specs below. All tested with The Junk shop demo scene, timed via phone stop watch so I guesstimate the marginal of error is around 0.5s (still well below the resulting differences).
The Junk Shop pre render times
|2.81a init||2.81a tot||2.82a init||2.82a tot||2.83 init||2.83 tot||2.90.0 init||2.90.0 tot (9f7d84b656fb)|
|CUDA GPU (CPU+RTX)||8.0s||25.3s||8.2s||13.9s||18.6s||23.0s||18.1s||22.8s|
|CUDA GPU (Only RTX)||8.0s||13.9s||7.8s||13.7s||18.1s||23.0s||18.2s||22.9s|
My specs are:
OS: Win 10
CPU: Ryzen 7
Graphics card: ROG STRIX RTX 2070 OC 8GB
Graphics driver: 442.92 (Latest studio driver afaik)
- Is there any known difference in blender that should cause this differences?
- Is there any setting or similar I should check for that could cause this?
Any possible help is very much appreciated! Cheers