After having an issue with a heavy scene, making it crash every 20 frames, more or less, I decided to reinstall my gpu-drivers. Did not help. Now I realise older stable scenes, when rerendering, crash every few frames aswell. The error is "cant unload gpu memory, device x deactivated". So I browsed through the forums and manually changed the registry TdrDelay to 60, as Bepe mentioned in an older topic. The rendering didnt crash, but what started with 1 minute 50 per frame ended in 16 hours for 300 frames, frame times getting longer. The displayed memory shrunk to 2.4gb available, even though it should be around 7.6 given I use 3080 and have 4k monitor.
how could i troubleshoot?