cudaErrorMemoryAllocation : out of memory in 16G mode

Figured I'd play around with the 16G plotting mode, but I can't seem to get it to start. I'm convinced I'm doing something really basic incorrectly, as it just doesn't seem to be triggering the 16G mode properly ("Total Host RAM required: 213.25Gib" for example). Thanks for any tips!

./bladebit_cuda -z 1 -f 99... -c xc... cudaplot --disk-16 -t1 /media/user/2250596350593EAB/temp

Bladebit Chia Plotter
Version      : 3.1.0-beta1
Git Commit   : 7e7d52831fe54192a0f5b52ef9d6e60a80010e93
Compiled With: gcc 9.4.0

[Global Plotting Config]
 Will create 1 plots.
 Thread count          : 16
 Warm start enabled    : false
 NUMA disabled         : false
 CPU affinity disabled : false
 Farmer public key     : 99...
 Pool contract address : xc...
 Compression Level     : 1
 Benchmark mode        : disabled

[Bladebit CUDA Plotter]
Selected cuda device 0 : NVIDIA GeForce RTX 3070 Ti
 CUDA Compute Capability   : 8.6
 SM count                  : 48
 Max blocks per SM         : 16
 Max threads per SM        : 1536
 Async Engine Count        : 2
 L2 cache size             : 4.00 MB
 L2 persist cache max size : 3.00 MB
 Stack Size                : 1.00 KB
 Memory:
  Total                    : 7.77 GB
  Free                     : 6.91 GB

Allocating buffers (this may take a few seconds)...
Host Temp @ 81 GiB
Host Tables B @ 0 GiB
Host Tables A @ 132 GiB
Kernel RAM required       : 87241596928  bytes ( 83200.07  MiB or 81.25  GiB )
Intermediate RAM required : 73728        bytes ( 0.07      MiB or 0.00   GiB )
Host RAM required         : 141733920768 bytes ( 135168.00 MiB or 132.00 GiB )
Total Host RAM required   : 228975517696 bytes ( 218368.07 MiB or 213.25 GiB )
GPU RAM required          : 6140243968   bytes ( 5855.79   MiB or 5.72   GiB )
Allocating buffers
CUDA error: 2 (0x2 ) cudaErrorMemoryAllocation : out of memory

*** Panic!!! *** Fatal Error:  
CUDA error cudaErrorMemoryAllocation : out of memory.
./bladebit_cuda(_ZN7SysHost14DumpStackTraceEv+0x5b)[0x55df81ddcacb]
./bladebit_cuda(_Z9PanicExitv+0xf)[0x55df81f6985f]
./bladebit_cuda(+0x7f864)[0x55df81d84864]
./bladebit_cuda(main+0x911)[0x55df81d7f651]
/lib/x86_64-linux-gnu/libc.so.6(+0x28150)[0x7f6ced828150]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x89)[0x7f6ced828209]
./bladebit_cuda(_start+0x2e)[0x55df81d80fbe]

Chia-Network / bladebit

cudaErrorMemoryAllocation : out of memory in 16G mode #454