Updated speed test
For Helicon Focus I have added performance with hardware acceleration. Using an AMD Ryzen 7 3700X Processor and having the photos on a 1 TB Kingston’s A2000 NVMe PCIe SSD internal hard drive a large stack of 849 TIFF pictures 114MB each took 4 minutes and 43 seconds. This is approximately 3 pictures per second. Adding the support from my old GeForce GTX 980 graphic card increased the stacking speed to 1 minute and 43 seconds. This is approximately 8 pictures per second. Link to the page Choosing software for Focus Stacking – Step one speed