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V-Sync vs Monitor's Refresh Rate.

Princess Luna
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This is just a wondering I have had a few times, nothing problematic and I do not mind if I don't learn why this happens.

 

So I have a LG 29UM68-P as primary display on my Desktop as many of you should already know, it is a 60hz monitor that through DisplayPort is overclocked to a perfectly stable 80hz through nVidia's control panel, every thing works perfectly fine at 2560x1080p80hz.

 

Now I do have one question on why is it that this happens sometimes, the majority of games I play on this display, usually only first personal shooters as third person games I go for the TV + Gamepad, will run without issue while others will show this specific issue, I do not know why exactly, maybe it is the game's engine?

 

Since I'm playing single player games, campaign games and such the delay does not trouble me at all, so instead of using Fast Sync I more often than not go for the in-game's built V-Sync to handle tearing since it'll reduce my GPU usage, being a GTX 1080 Ti right now I can play games at 2560x1080p80hz max out with still considerable low GPU usage allowing me to keep the FE cooler very silent during gameplay, a win win for me.

 

Now the issue at hand at last, for example, Tomb Raider 2013, Firewatch and Bioshock Infinite are currently installed games I tested on, in-game V-Sync on, i look up to the ShadowPlay FPS counter and 80fps locked, sweet... now, went to try Prey and this has happened before I just don't remember in which game, I turned V-Sync on and...... 60FPS locked? why so? I really am not understanding why is that a few games when V-Sync is on it goes to 60FPS locked instead of the true monitor's refresh rate of 80hz.

 

Any ideas any one?

Personal Desktop":

CPU: Intel Core i7 8700 @4.45ghz |~| Cooling: Cooler Master Hyper 212X |~| MOBO: Gigabyte Z370M D3H mATX|~| RAM: 16gb DDR4 3333mhzCL16 G.Skill Trident Z |~| GPU: nVidia Founders Edition GTX 1080 Ti |~| PSU: Corsair TX650M 80Plus Gold |~| Boot:  SSD WD Green M.2 2280 240GB |~| Storage: 1x3TB HDD 7200rpm Seagate Barracuda + SanDisk Ultra 3D 1TB |~| Case: Fractal Design Meshify C Mini |~| Display: Toshiba UL7A 4K/60hz |~| OS: Windows 10 Pro.

Luna, the temporary Desktop:

CPU: Intel Core i7 10700KF @ 5.0Ghz (5.1Ghz 4-core) |~| Cooling: bq! Dark Rock 4 Pro |~| MOBO: Gigabyte Z490 UD |~| RAM: 32G Kingston HyperX @ 2666Mhz CL13 |~| GPU: AMD Radeon RX 6800 (Reference) |~| PSU: Corsair HX1000 80+ Platinum |~| Windows Boot Drive: 2x 512GB (1TB total) Plextor SATA SSD (RAID0 volume) |~| Linux Boot Drive: 500GB Kingston A2000 |~| Storage: 4TB WD Black HDD |~| Case: Cooler Master Silencio S600 |~| Display 1 (leftmost): Eizo (unknown model) 1920x1080 IPS @ 60Hz|~| Display 2 (center): BenQ ZOWIE XL2540 1920x1080 TN @ 240Hz |~| Display 3 (rightmost): Wacom Cintiq Pro 24 3840x2160 IPS @ 60Hz 10-bit |~| OS: Windows 10 Pro (games / art) + Linux (distro: NixOS; programming and daily driver)
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are the 60Hz games running at a different resolution ? like 1920x1080 instead of the native 2560x1080?

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Just now, KenjiUmino said:

are the 60Hz games running at a different resolution ? like 1920x1080 instead of the native 2560x1080?

Not really, every thing stays at 2560x1080p just fine

Personal Desktop":

CPU: Intel Core i7 8700 @4.45ghz |~| Cooling: Cooler Master Hyper 212X |~| MOBO: Gigabyte Z370M D3H mATX|~| RAM: 16gb DDR4 3333mhzCL16 G.Skill Trident Z |~| GPU: nVidia Founders Edition GTX 1080 Ti |~| PSU: Corsair TX650M 80Plus Gold |~| Boot:  SSD WD Green M.2 2280 240GB |~| Storage: 1x3TB HDD 7200rpm Seagate Barracuda + SanDisk Ultra 3D 1TB |~| Case: Fractal Design Meshify C Mini |~| Display: Toshiba UL7A 4K/60hz |~| OS: Windows 10 Pro.

Luna, the temporary Desktop:

CPU: Intel Core i7 10700KF @ 5.0Ghz (5.1Ghz 4-core) |~| Cooling: bq! Dark Rock 4 Pro |~| MOBO: Gigabyte Z490 UD |~| RAM: 32G Kingston HyperX @ 2666Mhz CL13 |~| GPU: AMD Radeon RX 6800 (Reference) |~| PSU: Corsair HX1000 80+ Platinum |~| Windows Boot Drive: 2x 512GB (1TB total) Plextor SATA SSD (RAID0 volume) |~| Linux Boot Drive: 500GB Kingston A2000 |~| Storage: 4TB WD Black HDD |~| Case: Cooler Master Silencio S600 |~| Display 1 (leftmost): Eizo (unknown model) 1920x1080 IPS @ 60Hz|~| Display 2 (center): BenQ ZOWIE XL2540 1920x1080 TN @ 240Hz |~| Display 3 (rightmost): Wacom Cintiq Pro 24 3840x2160 IPS @ 60Hz 10-bit |~| OS: Windows 10 Pro (games / art) + Linux (distro: NixOS; programming and daily driver)
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52 minutes ago, Princess Cadence said:

This is just a wondering I have had a few times, nothing problematic and I do not mind if I don't learn why this happens.

 

So I have a LG 29UM68-P as primary display on my Desktop as many of you should already know, it is a 60hz monitor that through DisplayPort is overclocked to a perfectly stable 80hz through nVidia's control panel, every thing works perfectly fine at 2560x1080p80hz.

 

Now I do have one question on why is it that this happens sometimes, the majority of games I play on this display, usually only first personal shooters as third person games I go for the TV + Gamepad, will run without issue while others will show this specific issue, I do not know why exactly, maybe it is the game's engine?

 

Since I'm playing single player games, campaign games and such the delay does not trouble me at all, so instead of using Fast Sync I more often than not go for the in-game's built V-Sync to handle tearing since it'll reduce my GPU usage, being a GTX 1080 Ti right now I can play games at 2560x1080p80hz max out with still considerable low GPU usage allowing me to keep the FE cooler very silent during gameplay, a win win for me.

 

Now the issue at hand at last, for example, Tomb Raider 2013, Firewatch and Bioshock Infinite are currently installed games I tested on, in-game V-Sync on, i look up to the ShadowPlay FPS counter and 80fps locked, sweet... now, went to try Prey and this has happened before I just don't remember in which game, I turned V-Sync on and...... 60FPS locked? why so? I really am not understanding why is that a few games when V-Sync is on it goes to 60FPS locked instead of the true monitor's refresh rate of 80hz.

 

Any ideas any one?

And when you turn Fast Sync on with Prey and turn off V-Sync in game ?

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