I just built a new rig, i6700k rog maximus viii formula mother board 32 gigs ddr4 3000 ram, evga supernova 850p power supply, on custom watercooling. Running 3 asus VG248QE monitors i get massive system lag when the evga 1070 FTW is not underload. on the desktop with nothing running it is almost impossible to type, move the mouse or do anything. Put the card under load and it runs perfectly. In Game NO problems at all until you open a menu, scene transitions, load in screens, anything that does not require the video card to be under load. Elder scrolls Lag almost all the time. While i am lagging there is constant sound crackle and screen freezing. The system lag is so bad that it even disables other programs and or actions within programs (example, ability to talk in voice com programs like teamspeak, can still hear people, see people come and go but unable to talk until closing program and restarting, next cut scene menu, load in have to restart the program.)
I spent hours on the phone with evga support and asus support. Not the power supply ( rma the one i had) Not the Video card (rma the one i had, also worked flawlessly on my amd build and the intel build listed above works perfectly with all 3 monitors on my gtx 960 strix) Not the ram or mother board, power options to max performance. Both MSI after burner and precission x oc have same problem.
According to other forums i have read, and evga support it does seem to be a driver issue and an issue with the power saving mode built into the 10 series cards and how it is affecting the refresh rates with the monitors. Running 1 monitor my 1070 idles down to 270mv and 600mhz on the clock. All runs perfectly at 144hrz, add the second monitor and the voltage wont drop below 743mv with clock speed at 1607mhz. if i run 144 hrz i get the same system lag only when in games at load in screens and menues (the 1070 tries to throttle down because it doesnt need the same graphix load and the system studders audio crackle and all) , the rest of the pc seems stable at idle, ability to type move mouse ect no problems. drop to 60HRZ and the studder lessens. Third monitor, FORGET ABOUT IT. unless i run K boost in precision x oc the throttling of the card to "save power" makes the pc unusable.
Some other forums and evga support say that when the card goes into power saving mode it is not sending enough signal to the monitors, framtime spikes card increases GPU usage to compensate wich lags the video and is creating massive input lag wich is the studder. they suggested running 3 display port cables instead of 2 DP and 1 DVI, Didnt fix it. Reinstalled older drivers (pre hotfix to ease the mind of people afraid of the head issues due to no thermal pads on vrms) thinking maybe evga tweaked power settings to lower usage and lower temps along with the increased fan curve, did not fix it.
AMD rig, is flawless (minus the lower frame rates due to bottleneck) but noproblems at all, only seems to be a pain on my intel rig i built any other ideas.