[Bug 2145121] Re: rtl8852be rtw89: 2.4GHz latency spikes/packet loss under load; improved with disable_ps_mode + disable_clkreq/ASPM

[Cristobal Ortiz Ortiz]

Repro is easiest by pinging the router (192.168.1.1) while running Speedtest on 
2.4 GHz. Router-ping spikes (100–260ms) + occasional packet loss show it’s the 
Wi-Fi hop, not the ISP.
Switching to 5 GHz removes the spikes (router-ping stays low, 0% loss).
Mitigation that helped:
options rtw89_core disable_ps_mode=y
options rtw89_pci disable_clkreq=y disable_aspm_l1=y disable_aspm_l1ss=y

“2.4 GHz under load: avg ~44ms, max ~263ms, ~0.6% loss; 5 GHz under
load: avg ~3ms, max ~25ms, 0% loss.”

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https://bugs.launchpad.net/bugs/2145121

Title:
  rtl8852be rtw89: 2.4GHz latency spikes/packet loss under load;
  improved with disable_ps_mode + disable_clkreq/ASPM

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