Something about Warlock Zerk in Silkroad
We noticed a difference in zerk regain too, after moving from TSRO to KSRO. Maybe there was an update regarding the zerk regeneration. At least in lower levels the difference was quite big. On SRO we zerked like 2-3 times on the same Sungsung Giant Party. We zerked maybe once and we did not change our way to play on SRO or our build and not even our character (Silkroad gold) skin.
We just took another IGN and played (Silkroad online gold) on another more advanced version. On higher levels with better skills the zerk regeneration for warlocks on KSRO and TSRO was quite the same again though. We think on KSRO the zerk regeneration depends more on the skills than on other versions. Maybe you got that update on ISRO too now.
Seriously we do not understand why everyone likes to solo-grind with a warlock. It is kinda boring compared to being warlock in pts and it is a lot more efficient to play in pts. We do not really like this style of grinding, but warlock is really a lot fun in pts. You should rather make a video of a warlock leveling in pt, would be much more interesting.