I decided to "cheat" the program. I deleted all programs in four custom columns I made (except the four made for tag categorizing since I always need them) and left them with
. (In total I have 8 columns made from other columns, 4 of them act like tags)
When I need these values, I'll just paste the program into calibre from txt file I saved. Since I'll need these columns rarely it improves performance speed twice.
So I am again with 2 mins freeze instead of 4. I guess I'll have to live with it. Since everything is in GPM now, nothing else I can do.
Or deleting the columns would make it even better? With that little I know, I don't think so as these columns have no program in them. I have four columns which I left without program, I could leave only one and paste all programs in it when I need it. I just don't want to delete 3 columns without good reason since I already have like 50 trash columns in preferences for book details.
Thanks for all the help