Insane CPU spikes during playback on UI3 and during motion

gdamario

gdamario

n3wb
Feb 19, 2024
3
0
Canada
Hi all,

I'm running an i7 7700k and a GTX 1060 for AI. The intel GPU is disabled due to how BI handles GPU selection. I'm noticing that during motion, my CPU spikes to 100% then comes back down. I'm not using hardware acceleration for recording however I am using it for AI and UI3 encoding to help. During UI3 playback, my CPU jumps to 100% also and FPS drops to 2, then it goes to 20fps and 20% cpu. I spoke to support and haven't had any help. I am using sub streams also.

Any suggestions?
 
@gdamario Make sure your video encoding profile for UI3 is set to use H.264, not H.265. While the latter will save you a bit of Internet bandwidth during playback, it will greatly increase server CPU usage while using UI3 and increase CPU usage on your playback device as well. Most Internet connections are fast enough that this is not a good trade. I would disable hardware acceleration for UI3 encoding as well—I haven't found hardware acceleration to do anything but increase CPU and power usage in Blue Iris. Additional settings that could help would be to change the encoder preset from veryfast to superfast or even ultrafast (all of these settings can be found in Blue Iris -> Settings -> Webserver -> Advanced -> Configure). Note that this CPU is slow enough it won't be able to handle anything above 2K video streams at 30fps. It would also help CPU usage (at the expense of storage time) to make sure your cameras are also running H.264 rather than H.265 (my recommendation would be to change this last, if applicable and the other suggestions didn't work).
 
So you suggest to get a newer CPU? I wouldn't mind upgrading to a 12th gen i7 or something like that. I thought the 7700k would be able to handle it.
 
No, with optimized settings you would be fine, and that is what he was getting at.

People run 4th Gen here just fine.
 
Make certain you have performed everything HERE.

The PC should be dedicated to running Blue Iris, and nothing else.

Especially excluding all things Blue Iris from all Antivirus, including defender, as outlined in the Blue Iris built in help.

See this as well.

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