I don't know why I only just thought of this now, but the first time you play comp and complete your placement games, is there a limit to how high of a rank you can get?

So the new act came out like 1 month ago or something. I ended up asc 3 last act and since the new one i've just had an absurd lose streak and now im d2. I've tried everything, solo q duo trio and 5stacks(even in lower ranks) yet i just can...