[pclmulqdq]

Hardware offload should be protocol-independent, but I suppose most network cards assume some stuff about TLS and aren't set up for QUIC?

[Matthias247]

NICs assume stuff for TCP (segmentation offload) that they can’t do for UDP, or can only do in a very limited fashion (GSO).

TLS offloads are very niche. There’s barely anyone using them in production, and the benchmarks are very likely without