mac OS Catalina 10.15 - Watchdog Timeout Kernel Panic

En los últimos días, cuando apago mi iMac, tarda mucho tiempo, se congela y luego se reinicia con este informe, que es siempre básicamente el mismo. Ya he reseteado la PRAM y el SMC. Si alguien pudiera ayudarme a entender lo que está pasando, sería genial.

panic(cpu 1 caller 0xffffff7f837afaae): watchdog timeout: no checkins from watchdogd in 302 seconds (5030 totalcheckins since monitoring last enabled), shutdown in progress
Backtrace (CPU 1), Frame : Return Address
0xffffff82bd8dbc40 : 0xffffff800211868d 
0xffffff82bd8dbc90 : 0xffffff8002252ab5 
0xffffff82bd8dbcd0 : 0xffffff800224463e 
0xffffff82bd8dbd20 : 0xffffff80020bea40 
0xffffff82bd8dbd40 : 0xffffff8002117d57 
0xffffff82bd8dbe40 : 0xffffff8002118147 
0xffffff82bd8dbe90 : 0xffffff80028bf328 
0xffffff82bd8dbf00 : 0xffffff7f837afaae 
0xffffff82bd8dbf10 : 0xffffff7f837af486 
0xffffff82bd8dbf50 : 0xffffff7f837c4d9c 
0xffffff82bd8dbfa0 : 0xffffff80020be13e 
      Kernel Extensions in backtrace:
         com.apple.driver.watchdog(1.0)[B6A95892-6C75-3CF5-A6CC-6D83F30FA1D5]@0xffffff7f837ae000->0xffffff7f837b6fff
         com.apple.driver.AppleSMC(3.1.9)[D2F0B610-83F8-3B84-B0BD-D9D0CC95A697]@0xffffff7f837b7000->0xffffff7f837d5fff
            dependency: com.apple.iokit.IOACPIFamily(1.4)[2956198D-24F2-3790-A9B2-1EAB9434B906]@0xffffff7f837a5000
            dependency: com.apple.driver.watchdog(1)[B6A95892-6C75-3CF5-A6CC-6D83F30FA1D5]@0xffffff7f837ae000
            dependency: com.apple.iokit.IOPCIFamily(2.9)[2F37AE58-E6B9-3B18-9092-3B80D34C334B]@0xffffff7f82b31000

BSD process name corresponding to current thread: kernel_task

Mac OS version:
19H15

Kernel version:
Darwin Kernel Version 19.6.0: Thu Oct 29 22:56:45 PDT 2020; root:xnu-6153.141.2.2~1/RELEASE_X86_64
Kernel UUID: 9B5A7191-5B84-3990-8710-D9BD9273A8E5
Kernel slide:     0x0000000001e00000
Kernel text base: 0xffffff8002000000
__HIB  text base: 0xffffff8001f00000
System model name: iMac14,2 (Mac-27ADBB7B4CEE8E61)
System shutdown begun: YES
Panic diags file available: YES (0x0)

System uptime in nanoseconds: 50625992870163
last loaded kext at 44848782795591: >usb.cdc.acm    5.0.0 (addr 0xffffff7f85fa3000, size 32768)
last unloaded kext at 44911847112129: >!UMergeNub   900.4.2 (addr 0xffffff7f85f77000, size 12288)
loaded kexts:
>!ATopCaseHIDEventDriver    3430.1
>AudioAUUC  1.70
@fileutil   20.036.15
>!APlatformEnabler  2.7.0d0
>AGPM   111.4.4
>X86PlatformShim    1.0.0
>!AMikeyHIDDriver   131
@filesystems.autofs 3.0
>!AMikeyDriver  283.15
>!AHDA  283.15
>!A!IHD5000Graphics 14.0.7
@AGDCPluginDisplayMetrics   5.2.6
>!A!IFramebufferAzul    14.0.7
>!AHV   1
|IOUserEthernet 1.0.1
|IO!BSerialManager  7.0.6f7
>pmtelemetry    1
@Dont_Steal_Mac_OS_X    7.0.0
>!ABacklight    180.3
>!AUpstreamUserClient   3.6.8
>!AMCCSControl  1.14
@GeForce    14.0.0
>eficheck   1
>!ASMCLMU   212
>!AThunderboltIP    3.1.4
>!ALPC  3.1
>!A!ISlowAdaptiveClocking   4.0.0
>!AVirtIO   1.0
@filesystems.hfs.kext   522.100.5
@!AFSCompression.!AFSCompressionTypeDataless    1.0.0d1
@BootCache  40
@!AFSCompression.!AFSCompressionTypeZlib    1.0.0
@filesystems.apfs   1412.141.1
@private.KextAudit  1.0
>!ASDXC 1.7.7
>AirPort.BrcmNIC    1400.1.1
|!ABCM5701Ethernet  10.3.5
>!AAHCIPort 341.140.1
>!ARTC  2.0
>!AACPIButtons  6.1
>!AHPET 1.8
>!ASMBIOS   2.1
>!AACPIEC   6.1
>!AAPIC 1.7
$!AImage4   1
@nke.applicationfirewall    303
$TMSafetyNet    8
@!ASystemPolicy 2.0.0
|EndpointSecurity   1
>usb.cdc.ncm    5.0.0
>usb.cdc    5.0.0
>!A!BHIDKeyboard    209
>!AHIDKeyboard  209
>!AMultitouchDriver 3440.1
>!AInputDeviceSupport   3440.8
>!AHS!BDriver   3430.1
>IO!BHIDDriver  7.0.6f7
@kext.triggers  1.0
>DspFuncLib 283.15
@kext.OSvKernDSPLib 529
|IOAVB!F    850.1
>!ABacklightExpert  1.1.0
>!ASMBus!C  1.0.18d1
|IOAccelerator!F2   438.7.3
>!ASMBusPCI 1.0.14d1
@nvidia.driver.NVDAGK100Hal 14.0.0
@nvidia.driver.NVDAResman   14.0.0
>!AThunderboltEDMSink   4.2.3
>X86PlatformPlugin  1.0.0
>IOPlatformPlugin!F 6.0.0d8
@!AGPUWrangler  5.2.6
@!AGraphicsDeviceControl    5.2.6
|IOSlowAdaptiveClocking!F   1.0.0
>!AHDA!C    283.15
|IOHDA!F    283.15
|IONDRVSupport  576.1
|IOGraphics!F   576.1
@plugin.IOgPTPPlugin    840.3
|Broadcom!BHost!CUSBTransport   7.0.6f7
|IO!BHost!CUSBTransport 7.0.6f7
|IO!BHost!CTransport    7.0.6f7
|IO!B!F 7.0.6f7
|IO!BPacketLogger   7.0.6f7
>usb.!UHub  1.2
>usb.networking 5.0.0
>usb.!UHostCompositeDevice  1.2
|IOAudio!F  300.2
@vecLib.kext    1.2.0
|IOSerial!F 11
@filesystems.hfs.encodings.kext 1
|IOSurface  269.11
>!AThunderboltDPOutAdapter  6.2.6
>!AThunderboltDPInAdapter   6.2.6
>!AThunderboltDPAdapter!F   6.2.6
>!AThunderboltPCIDownAdapter    2.5.4
|IOAHCIBlock!S  316.100.5
>!AThunderboltNHI   5.8.6
|IOThunderbolt!F    7.6.1
|IO80211!F  1200.12.2b1
>corecapture    1.0.4
|IOSkywalk!F    1
|IOUSB!F    900.4.2
|IOEthernetAVB!C    1.1.0
>mDNSOffloadUserClient  1.0.1b8
>usb.!UXHCIPCI  1.2
>usb.!UXHCI 1.2
|IOAHCI!F   290.0.1
>!AEFINVRAM 2.1
>!AEFIRuntime   2.1
|IOSMBus!F  1.1
|IOHID!F    2.0.0
$quarantine 4
$sandbox    300.0
@kext.!AMatch   1.0.0d1
>DiskImages 493.0.0
>!AFDEKeyStore  28.30
>!AEffaceable!S 1.0
>!ASSE  1.0
>!AKeyStore 2
>!UTDM  489.120.1
|IOSCSIBlockCommandsDevice  422.120.3
>!ACredentialManager    1.0
>KernelRelayHost    1
>!ASEPManager   1.0.1
>IOSlaveProcessor   1
|IOUSBMass!SDriver  157.140.1
|IOSCSIArchitectureModel!F  422.120.3
|IO!S!F 2.1
|IOUSBHost!F    1.2
>!UHostMergeProperties  1.2
>usb.!UCommon   1.0
>!ABusPower!C   1.0
|CoreAnalytics!F    1
>!AMobileFileIntegrity  1.0.5
@kext.CoreTrust 1
|IOTimeSync!F   840.3
|IONetworking!F 3.4
|IOReport!F 47
>!AACPIPlatform 6.1
>!ASMC  3.1.9
>watchdog   1
|IOPCI!F    2.9
|IOACPI!F   1.4
@kec.pthread    1
@kec.Libm   1
@kec.corecrypto 1.0