Is this normal vsync behavior?

[JesusSweat]

I have a GTX 680 and i73770k. I vsync all my games because i cannot stand tearing. Very rarely will my framerate stay locked at 60fps. The framerate will often dip to 59/58 or up to 61. Are these just rounding errors in the fps counter, or are they indicative of something wrong?

I seem to be getting a lot of conflicting information from the internet. I'm concerned this problem is limited to the 600 series of GTX cards as stated in this thread:

https://forums.geforce.com/default/...posts-will-be-deleted-vsync-stutter-discussi/

Thanks!

 

[Rroff]

FPS counters aren't _that_ precise they will usually use a bit of code in the main program loop that checks current time against the last time the framerate was updated and if more than 1000ms has past update the displayed framerate with the number of frames counted since the last update. As this code is looping at say 10-30ms intervals the point that the framecounter resets and the displayed framerate updates can easily be out by a frame or 2 compared to the exact moment 1000ms passed since the last update.

 

[JesusSweat]

FPS counters aren't _that_ precise they will usually use a bit of code in the main program loop that checks current time against the last time the framerate was updated and if more than 1000ms has past update the displayed framerate with the number of frames counted since the last update. As this code is looping at say 10-30ms intervals the point that the framecounter resets and the displayed framerate updates can easily be out by a frame or 2 compared to the exact moment 1000ms passed since the last update.

Good to know. Is it normal for it frame rates to dip by as much a 10 fps when going into a new area in game? I assume this is the game loading assets to the vram. For example, in the Arkham City Demo there is a building with 4 gargoyles on each corner. Rapidly jumping in between these gargoyles can cause noticeable hitching accompanied by a dip in framerate. I am running the demo from a SSD.

 

[Rroff]

IIRC some of the open areas in Arkham City aren't very well opptimised.