Thanks Alastair for the tip....
Here is the result moving to 68020, alpha, Chipset is now OCS-A1000, Chip mem: 2.0 MB, Fast 2.0 MB, Turbo Chip: on. I have Kickstart version 40.63 and Workbench 40.42.
Increased significantly, now it is 1683% faster tan Amiga 600.
Is there any newer Kickstart ROM or Workbench that I can test?
Thanks and regards