Nah new GTX 1080Tis are overpriced and the used market is very full of con artists.
If you really want nvidia go for a RTX 2070 though its just possible you just got a bad card in general and its not a AMD issue, remember AMD only provides the PCB and the actual GPU, the rest of the card can have issues outside of AMD so one cannot fully blame AMD all the time.
Manufacturer issues happen even if you went Nvidia, sure the red devil card is considered one of the best but red devil isnt perfect and you may have just got a dud from their batch.... it happens as thats the nature of mass production.
I know there is this consensus that AMD makes bad GPU's but this is not always the case.
One can have a 2080Ti and still have issues so it all goes down to the silicon lottery then and minor QC hiccups.
If you RMA the card see if a replacement card will work better, if the issue persists then maybe yes for your needs maybe nvidia may be better but there is never gaurentees as even nvidia has issues.