Hi,
I’M experiencing the siMilar issues in our project. Here are log entries and you can see that AddClone requires soMetiMes several seconds:
06 Nov 2025 18:24:23.072 Masters.AddClone(sourceMasterSlide) // <- ~1sec
06…...November 7, 2025, 9:01am 1 Hi, I’m experiencing the similar issues...(targetPresentation.Masters.Any(m => m.Name == sourceMasterSlide.Name))...