FPS drop on camera rotation
I'm having a strange issue where some players are experiencing an FPS drop when rotating the in-game camera.
View of issue: https://youtu.be/-1UjdBo5c24
The camera setup is simple and outlined below:
I cannot replicate this issue on my end and its specific to a handful of players. After some research, I was able to improve the FPS drop by turning off V-Sync but the FPS still wasn't optimal.
Has anyone experiences this issue or have an idea on how I can solve this?
Thank you :)
I think that the problem is coming from the fact that you are not multiplying your input values by the World Delta Time at all. That would explain the jittery-ness of the video, and why you can't replicate it on your machine.
The node you are looking for would be "Get World Delta Seconds", and then you probably want to add a "Rotation Speed" variable or something and multiply by that.
Here is a snip from the FPS Blueprint template:
The FPS may depend on what is in your viewport... what you are rendering...
For example, in my current project scene, if I point my camera at the ground the framerate increases. If I point it at an area with a lot of transparency (causing overdraw I think) the framerate drops. You can use the console command "Stat UnitGraph" to see whether your GPU or CPU is causing the framerate drop. Whether you are GPU or CPU bound. Zak Parrish of Epic did a great introductory performance profiling video on the official Epic channel about two years ago.
Also, make sure Google Chrome and other apps aren't running in the background... Netflix causes a heartbeat like flutter in FPS (you'll see this if it happens by using "Stat Unitgraph"... the heartbeat pattern of interference from another app is blatantly obvious)
answered Mar 09 '19 at 01:36 PM
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