Reading all about this has made me a little bit uneasy about the PC I'm having assembled with selected parts. I think I could still maybe turn the SLI 970 setup I had gone for a single GTX 980, if I were to call the shop tomorrow (and get a refund for the difference). Would it be the better choice?
I'm hoping to play games for some time to come at 3440x1440.
The problem may occur only with GTX 970 in SLI mode. In mono mode, you do not have the GPU power to sustain 4k gaming at a reasonable rate.