luksgimp
Intel Core i5-8265U testing with a LENOVO 20QDCTO1WW (N2HET73W 1.56 BIOS) and Intel UHD 620 WHL GT2 8GB on Arch Linux via the Phoronix Test Suite.
HTML result view exported from: https://openbenchmarking.org/result/2407058-VERB-LUKSGIM56&grw.
GIMP
Test: resize
GIMP
Test: rotate
GIMP
Test: auto-levels
GIMP
Test: unsharp-mask
Phoronix Test Suite v10.8.5