RTX 4000 usb-c to dvi

Hello all. I have an RTX 4000 that i need to drive a projector with 4 DVI inputs using MOSAIC. The 3 standard display ports are working great with a DP to DVI adapter. The usb-c is giving me problems. I purchased an active usb-c to DP adapter (startech brand i think) and from there i used a DP to DVI. That gives me a signal, but it is very noisy. I am hoping its just the adapter i purchased. Any suggestions for a different adapter that is known to work?