Originally Posted by OzHDHT
In one of my response to you in the VW500/600 thread I very briefly hit on this issue. You've now effective gone OTT on GPU power there with SLI. The prob now being that you are blowing out the frame buffer with such a high frame rate as your screen 60Hz screen can't keep up with the higher frame rate causing tearing. You could try the v-sync option in whatever game you're playing, that may help. Have a read of this : http://www.tweakguides.com/Graphics_9.html
Glad to see you finally got to 60Hz with the HDMI 2.0 980's btw, I was going to mention that, but initially had forgotten about that requirement when you initially reported the you were unable to get that refresh.
Responded in 600ES thread as well but updating here for others now.
I wouldn't call it out of proportion. If you look at the specs for games for to run in 4k resolution, many fall below 60Hz. For 1080P, I agree. One 970 will do the job just fine.
Now the solution: I already had VSync on in game but it didn't do anything. So started googling around. Came across best settings for 980 (or any other high end card) using NVidia settings and there is an option to set VSync to Adaptive. Setting it to Adaptive did the job. Now the game runs flawlessly :-). Still once in a while (like once in 1/2 hour) I see it happening but one has to pay attention to know it.
Step by step Guide:
1 - Right click on Desktop and select NVidia Control Panel
2 - Click on Manage 3D Settings from left panel (2nd link from top).
3 - Under Global Settings In Right Panel, scroll down all the way to see Vertical Sync.
4 - From Vertical Sync drop down options, Select Adaptive.
I do have 60Hz but only when I select 1080P but it goes away when I am setting resultion to 4k in Resolution section. This is because of my avr. When I connect HDMI directly from PC to projector, I can see 60Hz option. So don't know what avr (Marantz SR 6007)is doing. I went through all the video options but none make 60Hz available. Any ideas???