Alt-tabbing out sends GPU utilisation to 100%

[theslynx]

Hello.

The other day, I alt-tabbed out of Warframe to check a guide in a browser, then grabbed a drink from the kitchen while on desktop. When I came back, GPU and CPU utilisation were through the roof, and my GPU was sitting at 81 degrees (during gameplay, I usually get 60 or so). Alt-tabbing back into the game brought the temperature and usage down quickly. I let it cool off, then tried doing it again and just sitting on desktop for a moment. My GPU and CPU both began to work hard and heat up drastically until I alt-tabbed back in and they went down.

I'll try updating fairly recent GPU drivers and trying again, but it would be great if someone at DE could look into this. Some of Warframe's systems are not terribly clear, and quickly checking guides is helpful during gameplay without the risk of baking hardware.

My system is an i5 7500 with a 1070 and Win 10, if that helps.