I just found the complete log (which I stupidly forgot that the "debug" versions of the OpenCore components put into my EFI partition):
00:000 00:000 OC: OpenCore DBG-071-2021-07-05 is loading in Optional mode (0/0)...
00:034 00:034 OC: Boot timestamp - 2021.07.30 03:49:49
00:062 00:027 OCCPU: Failed to get info for processor 0 - Device Error
00:089 00:027 OCCPU: MP services threads 12 (enabled 12) - Success
00:117 00:027 OCCPU: MP services Pkg 1 Cores 6 Threads 2 - Success
00:145 00:027 OCCPU: Found Intel(R) Core(TM) i7-3930K CPU @ 3.20GHz
00:173 00:027 OCCPU: Signature 206D7 Stepping 7 Model 2D Family 6 Type 0 ExtModel 2 ExtFamily 0 uCode 70C
00:200 00:027 OCCPU: EIST CFG Lock 1
00:228 00:027 OCCPU: Timer address is 408 from LPC
00:255 00:027 OCCPU: Failed to get FSBFrequency data using Apple Platform Info - Not Found
00:395 00:139 OCCPU: Intel TSC: 3295932403Hz, 3295MHz; FSB: 102997887Hz, 102MHz; MaxBusRatio: 32
00:425 00:030 OCCPU: Detected Apple Processor Type: 07 -> 0703
00:453 00:027 OCCPU: CPUFrequencyFromTSC 3295932403Hz 3295MHz
00:480 00:027 OCCPU: CPUFrequency 3295932403Hz 3295MHz
00:508 00:027 OCCPU: FSBFrequency 102997887Hz 102MHz
00:535 00:027 OCCPU: Pkg 1 Cores 6 Threads 12
00:563 00:027 OC: OcLoadNvramSupport...
00:591 00:027 OC: Not deleting NVRAM 4D1EDE05-38C7-4A6A-9CC6-4BCCA8B38C14:UIScale, matches add
00:619 00:027 OC: Not deleting NVRAM 4D1EDE05-38C7-4A6A-9CC6-4BCCA8B38C14
efaultBackgroundColor, matches add
00:646 00:027 OC: Not deleting NVRAM 4D1FDA02-38C7-4A6A-9CC6-4BCCA8B30102:rtc-blacklist, matches add
00:674 00:027 OC: Not deleting NVRAM 7C436110-AB2A-4BBB-A880-FE41995C9F82:boot-args, matches add
00:702 00:027 OC: Not deleting NVRAM 7C436110-AB2A-4BBB-A880-FE41995C9F82:ForceDisplayRotationInEFI, matches add
00:907 00:204 OC: Setting NVRAM 4D1EDE05-38C7-4A6A-9CC6-4BCCA8B38C14
efaultBackgroundColor - ignored, exists
01:027 00:120 OC: Setting NVRAM 4D1EDE05-38C7-4A6A-9CC6-4BCCA8B38C14:UIScale - ignored, exists
01:125 00:097 OC: Setting NVRAM 4D1FDA02-38C7-4A6A-9CC6-4BCCA8B30102:rtc-blacklist - Not Found
01:220 00:095 OC: Setting NVRAM 7C436110-AB2A-4BBB-A880-FE41995C9F82:SystemAudioVolume - ignored, exists
01:315 00:094 OC: Setting NVRAM 7C436110-AB2A-4BBB-A880-FE41995C9F82:boot-args - ignored, exists
01:409 00:093 OC: Setting NVRAM 7C436110-AB2A-4BBB-A880-FE41995C9F82:csr-active-config - ignored, exists
01:504 00:094 OC: Setting NVRAM 7C436110-AB2A-4BBB-A880-FE41995C9F82
rev-lang:kbd - ignored, exists
01:599 00:094 OC: Setting NVRAM 7C436110-AB2A-4BBB-A880-FE41995C9F82:run-efi-updater - ignored, exists
01:694 00:095 OC: Setting NVRAM 7C436110-AB2A-4BBB-A880-FE41995C9F82:ForceDisplayRotationInEFI - ignored, exists
01:789 00:094 OC: Current version is DBG-071-2021-07-05
01:883 00:094 OC: OcMiscMiddleInit...
02:005 00:121 OC: StorageHandle C1146898 with Disabled LauncherOption pointing to Default
02:097 00:092 OC: OcLoadUefiSupport...
02:186 00:088 OCAE: Builtin installed
02:279 00:092 OCRTC: Wake log is 0x00 0x00 0 0x00
02:370 00:091 OCOS: Discovered rotate NVRAM override to 0
02:462 00:092 OC: Loading Apple Secure Boot with Default (level 1)
02:554 00:091 OCII: AIFTimerBoostInit Current timer is 549183
02:645 00:091 OCII: AIFTimerBoostInit changed period 549183 to 50000
02:737 00:091 OC: Installing KeySupport...
02:830 00:092 OCII: gST->ConIn CD8A6C90 vs found CD8A6C90
02:921 00:090 AIK: Using 5 (50ms)
03:013 00:092 OCABC: ALRBL 0 RTDFRG 1 DEVMMIO 0 NOSU 0 NOVRWR 0 NOSB 0 FBSIG 0 NOHBMAP 0 SMSLIDE 1 WRUNPROT 1
03:114 00:100 OCABC: FEXITBS 0 PRMRG 0 CSLIDE 1 MSLIDE 0 PRSRV 0 RBMAP 0 VMAP 1 APPLOS 0 RTPERMS 0
03:206 00:092 OCABC: Firmware has 16715466 free pages (790218 in lower 4 GB)
03:298 00:091 OCABC: Awaiting rendezvous with OpenRuntime r12
03:393 00:094 OC: RequestBootVarRouting 1
04:021 00:628 OC: AVX enabled - 1
04:107 00:085 OC: Got 4 drivers
04:182 00:074 OC: Driver HfsPlus.efi at 0 is being loaded...
04:222 00:040 OCB: Arch filtering 0(33796)->C1189018(33796) caps 4 - Success