Wes_L

I haven't tried all the claimed fixes but the Focus Merge is working (Very Fast) with hardware acceleration on. The whole application seems to have come alive. Many thanks to the Team.

@Mark Thanks for the feedback. I am using the latest from Nvidia 461.40-desktop-win10-64bit-international-dch-whql. Nothing special. Not even overclocking. For some reason this card does seem to perform well in benchmarks.

Photo is virtually unusable with hardware acceleration enabled. This was trying to do a focus merge. The log file shows loads of CL errors including: [OpenCL] Error -5 (1152): Could not enqueue write buffer! [OpenCL] Error: CL_OUT_OF_RESOURCES error executing CL_COMMAND_WRITE_BUFFER_RECT on GeForce RTX 2080 SUPER (Device 0). [OpenCL] Error -9999 (757): Could not flush! [OpenCL] Error: Unknown error executing clFlush on GeForce RTX 2080 SUPER (Device 0). [OpenCL] Error -5 (1152): Could not enqueue write buffer! [OpenCL] Error: CL_OUT_OF_RESOURCES error executing CL_COMMAND_WRITE_BUFFER_RECT on GeForce RTX 2080 SUPER (Device 0). [OpenCL] Error -9999 (757): Could not flush! [OpenCL] Error: Unknown error executing clFlush on GeForce RTX 2080 SUPER (Device 0). [OpenCL] Error -9999 (746): Could not wait for event! There is also an error: Wintab: Failed to load Wintab32.dll Wintab: Failed to create tablet context Log.txt

@Venyer. Have you tried switching off hardware accelaration. Others are having similar issues https://forum.affinity.serif.com/index.php?/topic/132797-19-slow/

"New focus merge" was also very slow with open Cl enabled. Switching it off resolved the probem. I9 processor with RTX 2080 Super graphics Card