Need Fast/Reliable SD Card ASAP

Alright so I work with a few local bands, but recently got booked with some bands with 100k+ and 700k+ monthly listeners on Spotify. Huge opportunity for me.

Problem is, my SD cards aren’t quick enough to keep up with my rapid fire continuous shots. I have a Nikon D850. It can do around 7 photos per second, each raw photo being about 100mb. During concert shoots I find myself stuck waiting for my photos to save.

I don’t expect to find anything affordable that can keep up with what I assume to be 700mb per second. But what’s the best I can get for concerts under $100?

My biggest gig is in less than a week so I need something ASAP unless I stick with my current cards. They occasionally give me a “card error” and won’t save the last 3-5 shots before the error. I want something fast and more reliable while on a budget