When increasing the memory, applications began to freeze. How to decide?

Question

Dell

I increased the memory on the DELL Inspiron 15 7000 laptop from 8 to 32GB, I began to notice that somewhere on average every half an hour there was a slight freeze. It is very noticeable on the sound, as if the applications freeze for a split second and artifacts are heard from this on the sound. With what it can be connected? The maximum supported frequency is 2400Mhz, the installed brackets are 2666Mhz