Rush freeze or locks up on MacBook

I am experiencing the exact same issue. I just bought a new macbook in October(16gb ram, i7). At the beginning It work with no issues but since yesterday I can't edit simple videos which include photo and text... It freezes, its impossible to move text accurately and it won't play it or it will play with a delay. I think we are all in the same situation, the problem is that it seems that there is no resolution to this issue.