Should I buy an AMD 5700 XT or wait for next one?

I currently have an NVIDIA GTX 1070 Ti.

That wouldn’t be that big of an upgrade, not worth it imo.

Short answer:
No, because it is not a meaningful upgrade.

Long answer:
It is a nice card, do not get me wrong. However, I have so many wierd quirks and crashes and whatever with it, I made a thread to vent some steam.