Performance Issues with Dahua IPC-HFW71242H-Z Camera Stream in Blue Iris

[gapx]

Hello,

I recently added a new Dahua IPC-HFW71242H-Z IP camera to my setup and encountered a strange issue. Everything "is working" until I open the main stream in Blue Iris. When I do, the stream starts lagging and a warning appears, stating "Check FPS and key rates." The mainstream drops from 15/1 fps to 3.2/0.06 fps, although CPU utilization remains as usual.

Additionally, playing recordings from this camera within Blue Iris is buggy, but if I export the recording and play it with VLC, it works fine. To temporarily fix the main stream FPS rate in Blue Iris, I need to open the camera settings and click OK; this normalizes the FPS and allows recording, but the issue reappears as soon as I open the main stream again.

I have tried various settings adjustments without success. I would appreciate any suggestions or assistance.

Camera Settings:
- Codec: H.264
- Smart Codec: Off
- Resolution: 4000x3000
- Frame Rate (FPS): 15
- Bit Rate Type: CBR
- Bit Rate: 11264
- I Frame Interval: 15

System Information:
- Number of cameras: 19
- Blue Iris Version: 5.9.3.2 x64
- Operating System: Windows Server 2022 Datacenter
- Processor: 2x Xenon E5-2623 v3
- RAM: 40 GB

Thank you for your help.

[eduardok]

I have had the same issue. BI was running perfectly on my all-in-one Lenovo Intel Core i7-12700H 12th Gen with two ssd drives. Seven hikvision cameras set to 15fps on both streams. Direct disk recording and using each camera to cause a trigger via onvif. CPU was very low, 2-5%. Bought a GMKtec Intel Core i7-13620H 13th Gen with ssd drives. Installed the same version of blueiris on the GMKtec and experienced the reduced FPS whenever I viewed the mainstream. FPS would drop on each camera as I viewed it's mainstrem. CPU was higher, 10-20%. After trying everything I could possibly think of over many frustrating hours and searching every fourm known to me, I set the windows priority on blueiris.exe to above normal and bingo, it is now running just like my Lenovo. Setting the priority to above normal is not impacting any other processes on the GMKtec. I was so pleased with the results I put an entry in the windows registry to always run blueiris.exe at above normal so rebooting won't cause it to go back to normal.