G-Sync Capping FPS

sinani210 · April 8, 2019

Hi all.

I've been having some problems with my GPU recently. I updated to the most recent drivers (419.67) and started getting some stuttering in-game. I went through a bunch of settings to try to fix it, but nothing ended up working so I used DDU to uninstall and then put on a fresh copy. This fixed the stuttering issue but brought with it another issue. When I try to run a game with G-Sync enabled, the FPS seems to be capped at 60 and movement feels very slow and sluggish. The game I've been testing with is War Thunder in Full Windowed mode. Turning off G-Sync or turning the G-Sync option to fullscreen only seems to let me play with uncapped FPS, which makes sense since then G-Sync would be disabled in this test and I'm pretty sure G-Sync is what's causing the issue.

On a most likely unrelated note, GeForce Experience keeps telling me that a critical driver update is needed for Whisper Mode, despite the fact that I just reinstalled the drivers and clicking on the prompt does not give me a new driver to download.

Some other things that could be of note: Xbox DVR is off, the Nvidia In-Game overlay is disabled, and power management is on Prefer Maximum Performance in the NVidia 3D settings. I'm pretty sure this is a GPU issue since I have a 6700HQ, 16GB of RAM, and have the game installed on my SSD and I don't think switching the G-Sync setting alone would create such a large bottleneck in any of the other areas, especially since it hasn't in the past.

If anyone has any advice I would greatly appreciate it. I was able to run the game uncapped in Full Windowed mode before with both Fast Sync and G-Sync on, and if possible I would like to get back to that point.

Thanks in advance!

Lurick · April 8, 2019

Under Nvidia Control Panel > Display > Setup G-Sync

Do you have it set to Enable for Windowed and Full Screen or just full screen?

sinani210 · April 8, 2019

I have tried both. When it is set to "Enable for full screen mode", the FPS is uncapped, presumably because the game is running in Full Windowed mode which isn't counted as being full screen. When it is set to "Enable for windowed and full screen mode", the FPS is capped, presumably because the inclusion of G-Sync in windowed applications starts being applied to the game.