ChatGPT 4 having trouble to continue its topic in the middle of his explanation / Gives error at random times

However ChatGPT is extremely helpful and buy us huge times, the new ChatGPT 4 is slow and gives errors at a random time, right now it stops with his explanation in the middle of it.

Chat GPT 3.5 still works normal but it often makes mistakes and isn’t as professional as GPT 4