Vsync vs fastsync: question about frame-drops.
Posted: 11 Jan 2019, 03:05
What if I'm capping the frame rate to 45fps, because for whatever reasons this is the FPS I want?
- 80hz Monitor (it's a 75hz monitor OC'd to 80hz)
- 1980p resolution
- FAST SYNC Enabled
- RTSS frame-rate cap set to '45fps' (40fps has too much ghosting when panning the camera, and the game(s) I'm playing don't reach a consistent 60, so I found 45fps to be a good value)
Scenario: Superposition Benchmark demo set to custom/medium settings. It runs at a steady 45fps (capped to it) throughout the entire demo... EXCEPT at precisely scene 8 or 9 it will momentarily drop to 41-42fps then immediately go back to 45 until it finishes.
My goal is to make it never drop a single frame from the 45fps, to begin the demo and end it with 45fps locked. I know the frame-drop isn't related to graphics settings cos I ran the benchmark with easier settings and the frame-drop still happens in the same place/scene of the demo.
Is the frame-drop related to my settings (fast sync enabled with cap of 45fps in RTSS)? I try it of course with regular vsync instead of fast sync and the frame-drop happens in the same scene/place (still using same cap of 45fps); so with both regular vsync and with fast-sync the Benchmark demo drops a frame in the same place.
I'm going nuts here trying to figure out what I can do to not drop any frames, and I also tried all the values for max frames to render ahead as well from "Let App decide" to '1' all the way to '8' and no change in the frame drop. Scanline-sync is out of the picture because I can only use it to lock to 80Hz or to half of that, which would be 40, and I don't want to run game(s) at 40fps.
Am I just nuts and the frame drop could be caused by any number of factors that are completely unrelated to the kind of vertical synchronization I am using or to the fps Cap? I considered this... but I dunno, seems to me a benchmark that can easily run in +70fps from beginning to end, IF WHEN LOCKED TO 45fps, it stands to reason it should therefore _never drop below 45_.
Right? Hehe, thanks in advance for humoring me to anyone who answers.
EDIT: Oh, forgot to mention that the same happens (the frame drop) WITHOUT Vsync, i.e. with vsync/fast-sync off and only using RTSS frame cap. In fact, ONLY using the RTSS frame cap of 45fps made 1 additional frame drop happen sooner in the demo sequence of scenes.
- 80hz Monitor (it's a 75hz monitor OC'd to 80hz)
- 1980p resolution
- FAST SYNC Enabled
- RTSS frame-rate cap set to '45fps' (40fps has too much ghosting when panning the camera, and the game(s) I'm playing don't reach a consistent 60, so I found 45fps to be a good value)
Scenario: Superposition Benchmark demo set to custom/medium settings. It runs at a steady 45fps (capped to it) throughout the entire demo... EXCEPT at precisely scene 8 or 9 it will momentarily drop to 41-42fps then immediately go back to 45 until it finishes.
My goal is to make it never drop a single frame from the 45fps, to begin the demo and end it with 45fps locked. I know the frame-drop isn't related to graphics settings cos I ran the benchmark with easier settings and the frame-drop still happens in the same place/scene of the demo.
Is the frame-drop related to my settings (fast sync enabled with cap of 45fps in RTSS)? I try it of course with regular vsync instead of fast sync and the frame-drop happens in the same scene/place (still using same cap of 45fps); so with both regular vsync and with fast-sync the Benchmark demo drops a frame in the same place.
I'm going nuts here trying to figure out what I can do to not drop any frames, and I also tried all the values for max frames to render ahead as well from "Let App decide" to '1' all the way to '8' and no change in the frame drop. Scanline-sync is out of the picture because I can only use it to lock to 80Hz or to half of that, which would be 40, and I don't want to run game(s) at 40fps.
Am I just nuts and the frame drop could be caused by any number of factors that are completely unrelated to the kind of vertical synchronization I am using or to the fps Cap? I considered this... but I dunno, seems to me a benchmark that can easily run in +70fps from beginning to end, IF WHEN LOCKED TO 45fps, it stands to reason it should therefore _never drop below 45_.
Right? Hehe, thanks in advance for humoring me to anyone who answers.
EDIT: Oh, forgot to mention that the same happens (the frame drop) WITHOUT Vsync, i.e. with vsync/fast-sync off and only using RTSS frame cap. In fact, ONLY using the RTSS frame cap of 45fps made 1 additional frame drop happen sooner in the demo sequence of scenes.