TL;DR There is a delay between scene updates in the switchboard UE Editor and nDisplay instance, I’d love any advice on how to reduce it.
Hey everyone! I’ve run into a roadblock and I’d love any help I can get.
I’m running an LED Wall display, when i launch scenes through switchboard, i have an Editor instance and a nDisplay node. When I, for example, move an object in the editor, it takes ~17ms for that update to reflect on the ndisplay node. I cannot figure out why that delay exists or how to reduce it. (windows ui updates at ~3ms on the same display, for context)
Tech Specs:
- Ryzen 9950x
- RTX6000 Workstation
- 192GB DDR5
- 10G NIC
- Unreal 5.7.4
- Windows 11
- Virtual Screen: 6144 x 2048 (fed with 2x optical DP 1.4)
Things I’ve already tried:
- checking for hardware limitations;
- the rest of the operating system updates on the display close to realtime, so it can’t be the display.
- I’ve tried super simple scenes with nothing but a cube to rule out scene complexity; same delay occurs
- Running the display in Lit, Unlit & Wireframe; same delay occurs
- Changing sync policies in nDisplay; tried them all, same delay occurs
- Setting the LED display to Low Latency mode; same delay occurs
I’m not really sure what else to try. Even direction on how to troubleshoot would be helpful.
Here’s a video demonstrating the delay(Imgur: The magic of the Internet) (in wireframe view, but the same delay exists regardless of lit/unlit) as well as scene stats from nDisplay; not sure if that maybe has something to do with it?
Any help would be truly appreciated
Thanks <3