Blur Busters Forums

Hi,
Why does DiRT 4 run "worse" with G-SYNC enabled than without it? On my old 60Hz monitor the game ran smoothly at constant 60FPS with no problem. Now I have bought a Dell AW2518H monitor, and when I enable G-SYNC, DiRT 4 starts to stutter/hitch. Although most of the time it runs more fluently, but these stutters/hitches bother me much more than playing at “only” 60FPS. When I disable G-SYNC and set back to 60Hz with V-SYNC, stutters/hitches go away, but then why did I waste my money for an expensive monitor if I can’t use it for what it is originally made of? How could I get rid of these very annoying stutters/hitches? I’m really desperated and disappointed at the moment.
Thanks,
hazazs
P.S.: I haven't tried any other game yet, because I want to solve this problem first. Plus in theory every games support G-SYNC since it is undependent from the game engine, so it would work perfectly with every games.

Is it actually a g-sync problem? What happens if you disable g-sync but DON'T switch to 60Hz? Use the highest refresh rate. Does it have these stutters then?

The game every ~ 1 sec makes a survey of usb controllers. The frame rate drops to 1. When the frame rate drops sharply and rises below range g-sync, this leads to more visible stuttering. It is better to disable g-sync.

hazazs wrote:Hi,
When I disable G-SYNC and set back to 60Hz with V-SYNC, stutters/hitches go away, but then why did I waste my money for an expensive monitor if I can’t use it for what it is originally made of? How could I get rid of these very annoying stutters/hitches? I’m really desperated and disappointed at the moment.

You can imagine that g-sync is a Ferrari, and a monitor without g-sync is a KIA Sportage.
You have a road on which every second of your journey a pit comes across.
Ferrari will not give you a pleasant experience, and KIA Sportage will cope with this track.
g-sync will not give you a pleasant feeling if you do not remove the pits from the track.

Some games are designed in a way that doesn't work very well with GSYNC/FreeSync.

Some games will do gametime calculations differently depending on how the game is configured for VSYNC ON versus VSYNC OFF. In many situations, configuring the game to VSYNC OFF while enabling "GSYNC+VSYNC ON" in NVIDIA Control Panel, is sometimes the solution that helps the most.

Combined with a frame rate cap (either in-game or RTSS). Also adding a frame rate cap can help improve the situation -- e.g. using RTSS to set the frame rate cap about 3fps below maximum Hz. For some games that have frame rate problems above 60fps, it is sometimes useful to set a frame rate cap much lower than the max-Hz.

This will sometimes be a very game-specific optimization. The moral of the story is a game's VSYNC OFF setting tends to synchronize the best with graphics drivers configured in FreeSync/GSYNC setting. (Stutters can sometimes result from bad interactions between game setting + driver setting)

This may not solve your problem but it is something worth keeping in mind.

I have unplugged my TV, and restarted the PC. The stutters have gone!
But this is interesting, because although the TV was plugged into my GPU, I used only the monitor when the stutters came. The TV was off and disconnected (only plugged).

Yeah, one more example of G-Sync having big issues with more than one display (even if the second display is not even used.)