It has only started happening recently and I’m not sure why, nVidia’s drivers were updated around a week ago however this only started I’d say around 4-5 days ago. Nothing on my system has changed since it has started happening everything has stayed the same so I’m not sure what is causing it. When it happens it causes my GPU to speed up rapidly also (this I think is happening as I have a driver that increases the fan speed depending on the heat of the GPU Core).
It appears to happen most of the time when I am building lighting. (Yes, I’m using importance volumes and I’m only building light at preview standard).
I know it isn’t a problem with the card it’s self as it runs other high performance games on max settings such as BF4 with ease and with no crashing.
My hardware is not under the minimum requirements either:
OS: Windows 7 Ultimate SP1 64-bit
GPU: GTX 660Ti
CPU: Intel Core i5 3570K Ivy Bridge running at 3.4GHz
If it’s mostly happening while you build your lights then your system has overheating issues. Lightmass uses the CPU while building the lights so there must be an overall heat issue in the case if it is affecting the graphics card too when you are not building the lights.
This has been happening since 4.1… and is still happening in 4.5, and only with Unreal, not with any games.
And only when I run the game in editor, launching, full screen windowed, doesn’t matter, it crashes my GPU after a few minutes… always, I had to turn down the display settings, and then it runs a little longer, I can not test like this… Especially with terrain, I can only paint in LOW res mode… and it still crashes after a while… Everything is up to date, won’t be able to use the engine like this for much longer, as soon as my mobile games are done, I may have to switch back to Unity…
Hi Jonathan, yeah it’s happening in all projects, but , I have not ported my other two 4.4 games, to 4.5, as they have been released and published, and not required changes yet. My new game is pure 4.5, and NVIDIA has been dishing out a lot of drivers lately, I got the latest one again yesterday, and I built for Windows 64, played in full screen and in game, and it didn’t happen once…
It is a bit intermittent, I can put some heat gauges on, and have a look see, what the GPU and CPU temperatures look like.
It’s possible that a recent driver was causing the issue, and the frequent driver updates you mentioned were to fix that issue. Let me know if the problem resurfaces. Until then, I’m marking this as Resolved.