DDP channels disappear from config

[dadcoachengineer]

What happened?

Running 0.15.2 on QuinLED-Dig-Octa controllers. Configure channels 8 & 9 as DDP RGB (network). These channels will randomly fall out of the config. Downgrading to 0.15.1 resolves issue.

To Reproduce Bug

Configure channels 8 & 9 as DDP RGB (network) in the LED Preferences UI. After a period of time OR a reboot these channels will disappear from config.

Expected Behavior

Channels are persistent in config.

Install Method

Binary from WLED.me

What version of WLED?

0.15.2

Which microcontroller/board are you seeing the problem on?

ESP32

Relevant log/trace output

Anything else?

No response

Code of Conduct

• [x] I agree to follow this project's Code of Conduct

[DedeHai]

I suspect a memory allocation issue. please provide the full config.

[dadcoachengineer]

Thanks for the response @DedeHai

Config attached. Note that this cfg is from 0.15.1. I am happy to upgrade to 0.15.2 to see if there is a diff on the cfg file.

wled_cfg_wled-megatree01.json

[netmindz]

Over 4,000 pixels without any PSRAM will be pushing the limits

[dadcoachengineer]

I understand it is a lot of pixels @netmindz but it does not explain why the DDP channels are persistent in 0.15.1 and fall out in 0.15.2

I am working to reconfigure with shadow models in xlights rather than cascading with DDP to take the processing burden off of the primary controller.

[DedeHai]

I understand it is a lot of pixels @netmindz but it does not explain why the DDP channels are persistent in 0.15.1 and fall out in 0.15.2

Memory requirement calculation may have changed slighly, pushing your buses beyond allowed usage. You can check that by reducing their size. If it still wont save, it may be a bug

Edit: I will try to reproduce it