Prior to now the performance problems were a result of vkd3d working around a driver bug in software. If Nvidia fixed that particular bug, we’d need to wait for vkd3d before getting a performance boost.
Still, having a current working driver is a great step.
EDIT: Looks like that second bug is still an issue, though it is being actively worked on: Multiple CUDA/RTX/Vulkan application crashing with Xid (13,109) errors - #174 by amrits