Hi
It depends on the number of jobs you have defined and the number of records you transmit.
We see that half a core per job is sufficient, and if you are using 8 replication jobs in your configuration, you must have 4 cores in the SLT server.
We have 13 jobs running on a 8 core SLT and the CPU utilisation is consistently around 65%.
You generally just need 1 job per 10 tables you replicate.