How to set process to the lowest possible priority on Linux?

I want to set the process to the lowest possible scheduling on Linux. I came up with the following: nice -n 39 ionice -c 3 chrt -i 0 command Are there also other settings that one can set for a process to "lower" the process priority? Are these settings the "lowest" possible? More often than not, I do make -j$(nproc) or cmake or heavy tar processes that take full available I/O, memory and CPU on my machine. What is really frustrating, is that my mouse starts lagging. So I want to prevent it.