They don't jump. Usually make long term deals for each process and design their microarchitecture for that process. AMD moved all 7nm CPU, GPU production to TS

They don't jump. Usually make long term deals for each process and design their microarchitecture for that process. AMD moved all 7nm CPU, GPU production to TSMC and they are tied to them for the duration of 7nm. The question is if they can get all the capacity they need for price they can afford. It seems like high margin customers like Apple and Nvidia are always served first because they can pay more.