Nvidia Issue FPS drop with VSYNC enabled

Hi GGG bug hunters ^^

i have just switched from an ATI to an NVIDIA card on my rig and noticed
some strange fps drop with Vsync enabled on a multi monitor setup. This
only affects WINDOWED FULLSCREEN mode and does not happen in any other mode.
I am myself a bit depending on Windowed Fullscreen as for using multiple
screens. With the previous AMD/ATI card this issue did not happen!

Issue: Vsync turned on, stable 60fps. If now starting for example a video on my
2nd screen while poe is running (anywhere, hideout, ingame whatever) FPS drop to
30 and game stops running smooth. Also happens sometimes on instance change. IF
i DISABLE VSYNC the issue disappears. FPS rockets up to 250-350fps and
Videos on the seconds screen do not at all affect the framerate anymore.

It seems very odd as the rig can run the game at insane framrates on full
detail, it should be no issue keeping stable 60fps using VSYNC. This could
of course be down to the Nvidia drivers (21.21.13.7270 / 25.08.2016 latest nvidia
drivers) Kind of sad not to be able to use vsync as it lets my gtx770 go
down to around 30% power consumption. No Vsync= full blast, and it seems not
really necessary

rig/dxdiag

------------------
Time of this report: 9/3/2016, 03:53:06
Machine name:
Operating System: Windows 7 Ultimate 64-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_gdr.150525-0603)
System Manufacturer: Gigabyte Technology Co., Ltd.
System Model: Z68MA-D2H-B3
BIOS: Award Modular BIOS v6.00PG
Processor: Intel(R) Core(TM) i5-2500K CPU @ 3.30GHz (4 CPUs), ~3.6GHz
Memory: 8192MB RAM

screen1

Card name: NVIDIA GeForce GTX 770
Manufacturer: NVIDIA
Chip type: GeForce GTX 770
DAC type: Integrated RAMDAC
Device Key: Enum\PCI\VEN_10DE&DEV_1184&SUBSYS_118410B0&REV_A1
Display Memory: 4095 MB
Dedicated Memory: 1989 MB
Shared Memory: 2106 MB
Current Mode: 1920 x 1080 (32 bit) (60Hz)
Monitor Name: LG 27MB65(Display Port)
Monitor Model: 27MB65
Monitor Id: GSM5A59
Native Mode: 1920 x 1080(p) (60.000Hz)
Output Type: Displayport External
screen2

Card name: NVIDIA GeForce GTX 770
Manufacturer: NVIDIA
Chip type: GeForce GTX 770
DAC type: Integrated RAMDAC
Device Key: Enum\PCI\VEN_10DE&DEV_1184&SUBSYS_118410B0&REV_A1
Display Memory: 4095 MB
Dedicated Memory: 1989 MB
Shared Memory: 2106 MB
Current Mode: 1920 x 1080 (32 bit) (60Hz)
Monitor Name: LG W2442(HDMI)
Monitor Model: W2442
Monitor Id: GSM56CC
Native Mode: 1920 x 1080(p) (59.934Hz)
Output Type: HDMI


Would be nice if you guys could give me some feedback on this, maybe you have ideas what could cause this strange behavior? Wonder if anyone so far has encountered the same issue. If you think this is worth following up and need more information on the problem let me know what exactly you need.

As workaround you can try to enable vsync in the nivdia control panel -> 3d settings for path of exile.

I use this myself for some time, because of problems with path of exiles vsync implementation.

oh good point i shall try that :-) could be a good fix to keep my card nice and cold and not render itself silly for no reason. abuse of vsync for greener gaming? maybe.