Do any of you think Razing systems and Restoring depletion point mechanic takes too long? I am playing an endless difficutly campaign on normal speed atm and currently taking a system. Razing it takes me 48 turns. Also I sent a Behemoth to a previously owned craver system. Restoring that system would take 58 turns.  I do think this takes too long. Unless I am missing something. 

Sorry, what does it mean "currently taking a system. Razing it takes me 48 turns" ? Did you capture the system and it takes you 48 turns to get a full ownership, so that you could raze it?

As for restoration, install multiple modules, maybe even sent two behemoths to bring even more modules, that way you will stack the effect and speed up the process.

 You might already know this, but razing systems takes longer if it has a large amount of improvements/population. If you want to raze systems faster, consider using air troops when invading to increase the chance of destroying improvements/populations.

i meant currently razing.