Hi! I'm using probably the same device and the same modules here from Larry's repository. They are working perfectly - much better then any other existing modules. Absolutely stable and good throughput on even bad radio conditions. My device: 04:00.0 0280: 10ec:c821 Subsystem: 1a3b:3041 Flags: bus master, fast devsel, latency 0, IRQ 76 I/O ports at d000 [size=256] Memory at f7600000 (64-bit, non-prefetchable) [size=64K] Capabilities: [40] Power Management version 3 Capabilities: [50] MSI: Enable+ Count=1/1 Maskable- 64bit+ Capabilities: [70] Express Endpoint, MSI 00 Capabilities: [100] Advanced Error Reporting Capabilities: [148] Device Serial Number 00-e0-4c-ff-fe-c8-21-01 Capabilities: [158] Latency Tolerance Reporting Capabilities: [160] L1 PM Substates Capabilities: [170] Precision Time Measurement Capabilities: [17c] Vendor Specific Information: ID=0003 Rev=1 Len=054 <?> Kernel driver in use: rtw_8821ce Kernel modules: rtw_8821ce on Linux 5.10.27 / self build I saw you're using network manager - I'm using just wpa_supplicant (EAPTLS) - nothing else. Maybe that's the problem? One more thing: I'm on 2.4 GHz / 40 MHz. Thanks Andreas