Try to install just released KB4958258, I hope problem is gone. tortoiseMerge start faster and intensive working in one Windows session during 6 hours not lead to slowdown.
Before this update at the end of working day tortoisemerge can start very slow - 1...5 sec. Also before update, I periodically made log off and log in, in new session tortoisemerge start mush faster. -- You received this message because you are subscribed to the Google Groups "TortoiseSVN" group. To unsubscribe from this group and stop receiving emails from it, send an email to tortoisesvn+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/tortoisesvn/b4086757-d7b4-4bb4-9d99-645889690351%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.