I've had several computation errors with the Period Search Cuda 11.8 on an Nvidia 980 and 980Ti. Updated the drivers today and same issue. (This machine does not have a K80).

I managed to keep a few of the CrashDumps.
WinDBG is showing a 0xc0000005 Access Violation exception - likely a pointer bug like a reference to a null pointer.

Configuration:

2022-12-17 8:51:25 AM |  | cc_config.xml not found - using defaults
2022-12-17 8:51:25 AM |  | Starting BOINC client version 7.20.2 for windows_x86_64
2022-12-17 8:51:25 AM |  | log flags: file_xfer, sched_ops, task
2022-12-17 8:51:25 AM |  | Libraries: libcurl/7.84.0-DEV Schannel zlib/1.2.12
2022-12-17 8:51:25 AM |  | Data directory: C:\ProgramData\BOINC
2022-12-17 8:51:25 AM |  | Running under account Colin
2022-12-17 8:51:26 AM |  | CUDA: NVIDIA GPU 0: NVIDIA GeForce GTX 980 Ti (driver version 527.56, CUDA version 12.0, compute capability 5.2, 6144MB, 6144MB available, 7271 GFLOPS peak)
2022-12-17 8:51:26 AM |  | CUDA: NVIDIA GPU 1 (not used): NVIDIA GeForce GTX 980 (driver version 527.56, CUDA version 12.0, compute capability 5.2, 4096MB, 4096MB available, 5704 GFLOPS peak)
2022-12-17 8:51:26 AM |  | OpenCL: NVIDIA GPU 0: NVIDIA GeForce GTX 980 Ti (driver version 527.56, device version OpenCL 3.0 CUDA, 6144MB, 6144MB available, 7271 GFLOPS peak)
2022-12-17 8:51:26 AM |  | OpenCL: NVIDIA GPU 1 (ignored by config): NVIDIA GeForce GTX 980 (driver version 527.56, device version OpenCL 3.0 CUDA, 4096MB, 4096MB available, 5704 GFLOPS peak)
2022-12-17 8:51:26 AM |  | OpenCL: AMD/ATI GPU 0: AMD Radeon R7 200 Series (driver version 3240.7, device version OpenCL 1.2 AMD-APP (3240.7), 1024MB, 1024MB available, 1472 GFLOPS peak)
2022-12-17 8:51:26 AM |  | OpenCL: Intel GPU 0: Intel(R) UHD Graphics 770 (driver version 31.0.101.3959, device version OpenCL 3.0 NEO, 26128MB, 26128MB available, 397 GFLOPS peak)
2022-12-17 8:51:26 AM |  | Windows processor group 0: 20 processors
2022-12-17 8:51:26 AM |  | Host name: TRAUMAHAWK
2022-12-17 8:51:26 AM |  | Processor: 20 GenuineIntel 13th Gen Intel(R) Core(TM) i5-13600K [Family 6 Model 183 Stepping 1]
2022-12-17 8:51:26 AM |  | Processor features: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush acpi mmx fxsr sse sse2 ss htt tm pni ssse3 fma cx16 sse4_1 sse4_2 movebe popcnt aes f16c rdrandsyscall nx lm avx avx2 tm2 pbe fsgsbase bmi1 smep bmi2
2022-12-17 8:51:26 AM |  | OS: Microsoft Windows 11: Professional x64 Edition, (10.00.22621.00)
2022-12-17 8:51:26 AM |  | Memory: 63.79 GB physical, 72.79 GB virtual
2022-12-17 8:51:26 AM |  | Disk: 930.76 GB total, 789.93 GB free
2022-12-17 8:51:26 AM |  | Local time is UTC -5 hours
2022-12-17 8:51:26 AM |  | No WSL found.
2022-12-17 8:51:26 AM |  | VirtualBox version: 6.1.34

Let me know what you need and where to send it. eg Dropbox for the .dmp files.