5.10.17 and 5.11 tickless kernels are now available:
eskimo.com/kernel/

There is both a "client" and "server" version of each. The client version is compiled to be fully preemptive and with a 1000HZ clock for minimum latency. The server version is non-preemptive and with a 100HZ clock for maximum thruput.

There are three deb files for each, download all three and install with:
dpkg -i *.deb