What parameters I need to set so the big Patches don't time out?
1. Go to Maintenance | Geneneral | Oracle apps connect | highlight the environment and click the servers button. There is a column called autoparallel workers. This is the number of parallel workers used by autopatch. Unfortunately support cannot advise what this number should be. It is depending on how much cpu/resource you have on the system.
2. The parameter that you need to add in the stat.conf is called:
<env>.autopatch_timeout
The time measured in minutes. You can increase the value of "minutes". Once done increasing the timeout, save the changes and then restart the Stat Oracle Apps Agent.