2.1% is nothing. The share price can fluctuate that much with just day to day market noise.
It's a risky move and I think the share price could drop but it's still up massively over the years. a 20% drop from here would be classed as a correction.
They've taken a risk with the tech but a year from now I expect everyone to be raving about them
Even without the RT stuff, the competition is not even there on raw performance.
Of course the prices are an issue and NV don't usually drop their prices but I think they will this time. Probably a bit of early adoption tax on the RTX stuff combined with still having stocks of some of the old cards.
Should NV stocks drop quite a bit from here I'd advise people to buy some and hold for a few years, personally(DYOR tho, i'm not an advisor). I've been lucky enough to have bought some years ago. Although I've sold a lot now I still hold a decent amount.