Ah, I tried updating it to 1.4.1 beta 2, but it didn't make any difference.
Components (I uninstalled everything and reinstalled fooobar2000, and even tried foobar2000's Safe Mode at one point, but it didn't help):
Core (2018-10-12 13:03:08 UTC)
foobar2000 core 1.4.1 beta 2
foo_albumlist.dll (2018-10-12 13:02:10 UTC)
Album List 4.6
foo_cdda.dll (2018-10-12 13:02:12 UTC)
CD Audio Decoder 3.0
foo_converter.dll (2018-10-12 13:02:18 UTC)
Converter 1.5.3
foo_dsp_eq.dll (2018-10-12 13:02:08 UTC)
Equalizer 1.2.1
foo_dsp_std.dll (2018-10-12 13:02:10 UTC)
Standard DSP Array 1.3.2
foo_fileops.dll (2018-10-12 13:02:18 UTC)
File Operations 2.3
foo_freedb2.dll (2018-10-12 13:02:10 UTC)
Online Tagger 0.7
foo_input_std.dll (2018-10-12 13:02:38 UTC)
FFmpeg Decoders 3.2.4
Standard Input Array 1.0
foo_rgscan.dll (2018-10-12 13:02:16 UTC)
ReplayGain Scanner 2.3
foo_ui_std.dll (2018-10-12 13:02:34 UTC)
Default User Interface 0.9.5
foo_unpack.dll (2018-10-12 13:02:14 UTC)
ZIP/GZIP/RAR Reader 1.8
Thread dumps from Process Explorer:
• Highest CSwitch Delta by far - I presume this makes it the suspicious thread:
foobar2000.exe+0x156008
wow64cpu.dll!TurboDispatchJumpAddressEnd+0x544
wow64cpu.dll!TurboDispatchJumpAddressEnd+0x3a5
wow64cpu.dll!BTCpuSimulate+0x9
wow64.dll!Wow64LdrpInitialize+0x236
wow64.dll!Wow64LdrpInitialize+0x120
ntdll.dll!LdrInitShimEngineDynamic+0x308f
ntdll.dll!memset+0x1ec93
ntdll.dll!LdrInitializeThunk+0x5b
ntdll.dll!LdrInitializeThunk+0xe
Additional threads:
ucrtbase.dll_o____lc_collate_cp_func+0x10
wow64cpu.dll!TurboDispatchJumpAddressEnd+0x544
wow64cpu.dll!TurboDispatchJumpAddressEnd+0x9e
wow64cpu.dll!BTCpuSimulate+0x9
wow64.dll!Wow64LdrpInitialize+0x236
wow64.dll!Wow64LdrpInitialize+0x120
ntdll.dll!LdrInitializeThunk+0x179
ntdll.dll!LdrInitializeThunk+0x5b
ntdll.dll!LdrInitializeThunk+0xe
ucrtbase.dll_o____lc_collate_cp_func+0x10
wow64cpu.dll!TurboDispatchJumpAddressEnd+0x544
wow64cpu.dll!TurboDispatchJumpAddressEnd+0x9e
wow64cpu.dll!BTCpuSimulate+0x9
wow64.dll!Wow64LdrpInitialize+0x236
wow64.dll!Wow64LdrpInitialize+0x120
ntdll.dll!LdrInitializeThunk+0x179
ntdll.dll!LdrInitializeThunk+0x5b
ntdll.dll!LdrInitializeThunk+0xe
ucrtbase.dll_o____lc_collate_cp_func+0x10
wow64cpu.dll!TurboDispatchJumpAddressEnd+0x544
wow64cpu.dll!TurboDispatchJumpAddressEnd+0x9e
wow64cpu.dll!BTCpuSimulate+0x9
wow64.dll!Wow64LdrpInitialize+0x236
wow64.dll!Wow64LdrpInitialize+0x120
ntdll.dll!LdrInitializeThunk+0x179
ntdll.dll!LdrInitializeThunk+0x5b
ntdll.dll!LdrInitializeThunk+0xe
ucrtbase.dll_o____lc_collate_cp_func+0x10
wow64cpu.dll!TurboDispatchJumpAddressEnd+0x544
wow64cpu.dll!TurboDispatchJumpAddressEnd+0x9e
wow64cpu.dll!BTCpuSimulate+0x9
wow64.dll!Wow64LdrpInitialize+0x236
wow64.dll!Wow64LdrpInitialize+0x120
ntdll.dll!LdrInitializeThunk+0x179
ntdll.dll!LdrInitializeThunk+0x5b
ntdll.dll!LdrInitializeThunk+0xe
CSWitch Delta value shows up here:
ucrtbase.dll_o____lc_collate_cp_func+0x10
wow64cpu.dll!TurboDispatchJumpAddressEnd+0x544
wow64cpu.dll!TurboDispatchJumpAddressEnd+0x9e
wow64cpu.dll!BTCpuSimulate+0x9
wow64.dll!Wow64LdrpInitialize+0x236
wow64.dll!Wow64LdrpInitialize+0x120
ntdll.dll!LdrInitializeThunk+0x179
ntdll.dll!LdrInitializeThunk+0x5b
ntdll.dll!LdrInitializeThunk+0xe
gdiplus.dll!GdipBitmapUnlockBits+0x500
wow64win.dll+0x17924
wow64win.dll+0x429a
wow64.dll!Wow64SystemServiceEx+0x153
wow64cpu.dll!TurboDispatchJumpAddressEnd+0xb
wow64cpu.dll!BTCpuSimulate+0x9
wow64.dll!Wow64LdrpInitialize+0x236
wow64.dll!Wow64LdrpInitialize+0x120
ntdll.dll!LdrInitializeThunk+0x179
ntdll.dll!LdrInitializeThunk+0x5b
ntdll.dll!LdrInitializeThunk+0xe
ntdll.dll!TpIsTimerSet+0x40
ntdll.dll!ZwWaitForWorkViaWorkerFactory+0x14
wow64.dll!Wow64LogPrint+0xf44
wow64.dll!Wow64SystemServiceEx+0x153
wow64cpu.dll!TurboDispatchJumpAddressEnd+0xb
wow64cpu.dll!BTCpuSimulate+0x9
wow64.dll!Wow64LdrpInitialize+0x236
wow64.dll!Wow64LdrpInitialize+0x120
ntdll.dll!LdrInitializeThunk+0x179
ntdll.dll!LdrInitializeThunk+0x5b
ntdll.dll!LdrInitializeThunk+0xe
ntdll.dll!TpIsTimerSet+0x40
ntdll.dll!ZwWaitForWorkViaWorkerFactory+0x14
wow64.dll!Wow64LogPrint+0xf44
wow64.dll!Wow64SystemServiceEx+0x153
wow64cpu.dll!TurboDispatchJumpAddressEnd+0xb
wow64cpu.dll!BTCpuSimulate+0x9
wow64.dll!Wow64LdrpInitialize+0x236
wow64.dll!Wow64LdrpInitialize+0x120
ntdll.dll!LdrInitializeThunk+0x179
ntdll.dll!LdrInitializeThunk+0x5b
ntdll.dll!LdrInitializeThunk+0xe
ucrtbase.dll_o____lc_collate_cp_func+0x10
wow64cpu.dll!TurboDispatchJumpAddressEnd+0x544
wow64cpu.dll!TurboDispatchJumpAddressEnd+0x421
wow64cpu.dll!BTCpuSimulate+0x9
wow64.dll!Wow64LdrpInitialize+0x236
wow64.dll!Wow64LdrpInitialize+0x120
ntdll.dll!LdrInitializeThunk+0x179
ntdll.dll!LdrInitializeThunk+0x5b
ntdll.dll!LdrInitializeThunk+0xe
CSwitch Delta value shows up here too:
ucrtbase.dll_o____lc_collate_cp_func+0x10
wow64cpu.dll!TurboDispatchJumpAddressEnd+0x544
wow64cpu.dll!TurboDispatchJumpAddressEnd+0x9e
wow64cpu.dll!BTCpuSimulate+0x9
wow64.dll!Wow64LdrpInitialize+0x236
wow64.dll!Wow64LdrpInitialize+0x120
ntdll.dll!LdrInitializeThunk+0x179
ntdll.dll!LdrInitializeThunk+0x5b
ntdll.dll!LdrInitializeThunk+0xe
ucrtbase.dll_o____lc_collate_cp_func+0x10
wow64win.dll+0xf3a4
wow64win.dll+0x3ea2
wow64win.dll+0x4149
wow64.dll!Wow64SystemServiceEx+0x153
wow64cpu.dll!TurboDispatchJumpAddressEnd+0xb
wow64cpu.dll!BTCpuSimulate+0x9
wow64.dll!Wow64LdrpInitialize+0x236
wow64.dll!Wow64LdrpInitialize+0x120
ntdll.dll!LdrInitializeThunk+0x179
ntdll.dll!LdrInitializeThunk+0x5b
ntdll.dll!LdrInitializeThunk+0xe
DSOUND.dll!DllCanUnloadNow+0x56f0
wow64cpu.dll!TurboDispatchJumpAddressEnd+0x544
wow64cpu.dll!TurboDispatchJumpAddressEnd+0x9e
wow64cpu.dll!BTCpuSimulate+0x9
wow64.dll!Wow64LdrpInitialize+0x236
wow64.dll!Wow64LdrpInitialize+0x120
ntdll.dll!LdrInitializeThunk+0x179
ntdll.dll!LdrInitializeThunk+0x5b
ntdll.dll!LdrInitializeThunk+0xe
And here:
DSOUND.dll!DllCanUnloadNow+0x56f0
wow64cpu.dll!TurboDispatchJumpAddressEnd+0x544
wow64cpu.dll!TurboDispatchJumpAddressEnd+0x9e
wow64cpu.dll!BTCpuSimulate+0x9
wow64.dll!Wow64LdrpInitialize+0x236
wow64.dll!Wow64LdrpInitialize+0x120
ntdll.dll!LdrInitializeThunk+0x179
ntdll.dll!LdrInitializeThunk+0x5b
ntdll.dll!LdrInitializeThunk+0xe
ntdll.dll!TpIsTimerSet+0x40
ntdll.dll!ZwWaitForWorkViaWorkerFactory+0x14
wow64.dll!Wow64LogPrint+0xf44
wow64.dll!Wow64SystemServiceEx+0x153
wow64cpu.dll!TurboDispatchJumpAddressEnd+0xb
wow64cpu.dll!BTCpuSimulate+0x9
wow64.dll!Wow64LdrpInitialize+0x236
wow64.dll!Wow64LdrpInitialize+0x120
ntdll.dll!LdrInitializeThunk+0x179
ntdll.dll!LdrInitializeThunk+0x5b
ntdll.dll!LdrInitializeThunk+0xe
Thanks!