Do you run your workloads on Windows partitions/filesystem but using WSL2 as the runner? That's how you end up with abysmal performance.

We tested this in the office with equal laptops. CPU workloads have almost no VM overhead and the C++ / Rust compilation workloads on purely WSL2 virtual disk image is only 2% slower.

Yes WSL1 was more ambitious but the fundamental differences in the NT and POSIX makes it quite hard and CPU workloads suffered.