The Sleipnir on the Dock still has turrets that can overdo the power of the main ship (there was a patch where dps but also power need doubled per weapon block), they all need readjustment. The Manticore should do fine (a lot of dps was lost due to this though)
I did notice that (was gonna ask actually cause I thought the Sleipnir was newer than that patch and undersized reactor is not your style...), and that was what I wanted to blame it on at first but the turrets can stop firing, I can stop moving, stop firing and the power will not recover. I can just admin warp to another sector and warp right back and the ship is fine for a little while. I'm thinking it's an actual bug.
Ship versions I'm using:
Sleipnir Light Cruiser A1R3
Manticore Destroyer A6R5 - I believe it's the newest one since you made like 3 updates without incrementing revision number slacker :p
Yeah, just realized the Sleipnir is like the oldest of your post-rail ships...it's one of your newer ships to me (since I haven't been around for a few months) so I somehow missed that detail. I'll go blow some shit up with the Manti and see if it behaves.
Actually the more I think about it, yeah being as lock-on missiles have a long recharge cycle coupled with how turret heavy your ships are, I can see how they could overpower the reactor for a long time, especially with shields recharging. When I first came back I was like WTF when I couldn't fire weapons on my own ships, and I'm so anal I have a spreadsheet open when I build. The fact that I am jumping away breaks all target acquisition so gives the reactor a chance to breathe.