Hey, after updating the firmware of my NanoPi R5C to version 25.12.0, I’ve experienced lower speeds and higher latency spikes than usual. I know that I can achieve higher speeds with this hardware because it was quite stable with version 24.10. My internet plan is 1Gb download / 50Mb upload via Do…

[image] zDennii: I even tried downgrading back to version 24.10 without saving the config, but it didn’t work. [image] zDennii: I know that I can achieve higher speeds with this hardware because it was quite stable with version 24.10. [image] zDennii: after updating the firmware of…

From 24.10 to 25.12 , I dont know what it causes this but after downgrading to 24.10 the speeds are still the same like in the Waveform screenshot, without Sqm.

Did you confirm with another speedtest (not waveform)? I find waveform to be highly variable vs speedtest-go which you can run directly from your openwrt device. # speedtest-go speedtest-go v1.7.10 (git-dev) @showwin ✓ ISP: xxx.xxx.xxx.xxx (xxx) [xx.xxxx, xx.xxxx] ✓ Found 20 Public Servers …

tested it, I tested with cloudflare and ookla speedtest aswell but dont know why its so mixed [Unbenannt22] [Unbenannt2] [Unbenannt3]

[image] zDennii: but dont know why its so mixed Perhaps just normal behavior Perhaps don't use the router to test

That's not my experience on multiple OpenWrt machines at multiple locations.. speedtest-go gives is very stable results. Are you saying that under version 24 you get highly consistent results, but under 25 you get highly variable ones? Have you confirmed that with speedtes-go?

I was gotten stable results before the update 25.12 , after that something happend on the Device and now even 24.10 is not stable anymore. Problem is that both Versions are unstable now. I dont know what happend there. Thats the Reason why I better ask here because without transfer old configs it …

I suspect it's not OW but your connection. Either poor signals in your modem or ONT problems if you have fiber or download ISP stuff. Check signal levels in modem if you have one.

the weird part is my modem connection to my pc is fine. You see it in one of the Screenshots on the first post. I even see packet loss/fail around 1-10% in Counter strike 2. OpenWrt is full stock settings.

I just clean installed friendlywrt over usb , because it was easier with my knowledge to do, erased all data and clean installed the 24.10 of it but same thing there. I guess its a hardware defect than , the timing is to perfect to my upgrade on version 25.12. maybe someone will have a idea later, …

OpenWrt 25.12.0 Performance problem

Installing and Using OpenWrt

lleachii March 15, 2026, 11:48am 2

So, which version did you upgrade from, or are you claiming there's damage that isn't resolved by downgrading?