1 - what does "divided group" mean ? they are all targets of the same job ? this is a scheduled job? are there other things running in the system when the 3rd set kicks off ? what's happening in the database at that time ? how long does it take the 3rd group to start ?
2 by 'remediation job' you mean the deploy job that's pushing the patches ? these are all targets of the same job? is the job set to 'by server' or 'by phase' ?
Erez, check your Deploy Job Options to make sure that you have the By Server radio button selected rather than the By Phase radio button in the Flow Control section. This will help to insure that the job completes on as many servers as possible. If By Phase is selected it waits until all target servers complete a phase (simulate, stage, commit) before moving one. So, if you have one server stuck on simulate then none of the others will move on until that one server completes the simulate phase etc.