the most lag i had came from TDW`s red distress flares (part of MO or FX update mod)
...my system couldnt take it i think,
so if you think you have the most lag or performance problems while a ship blows up, try to disable this red distress flares:
edit
X:\SH5\Data\Zones.cfg using notepad
(make a backup and move the copy somwhere save)
search for sections,
[DistressFlareWarship]
[DistressFlareMerchant]
i changed them by removing the Effect2 line of both sections, they look like this now:
;Modified by TheDarkWraith
[DistressFlareWarship]
Multiplier=1.000000
Flotability=0.000000
Critic Flotation=0.300000
Armor Level=-1
HitPoints=130
Destructible=No
Critical=No
Effect1=Command_room_crewman_splinter_explosion_es cort, 40
FloodingTime=59.999996
CargoType=None
[DistressFlareMerchant]
Multiplier=1.000000
Flotability=0.000000
Critic Flotation=0.300000
Armor Level=-1
HitPoints=65
Destructible=No
Critical=No
Effect1=Command_room_crewman_splinter_explosion_me rchant, 40
FloodingTime=59.999996
CargoType=None
...result is a much more stable game and lag free explosions for me.
...by the way, i see you use the sound collection i putted together. This sound collection is eating much memory but is tested to be stable if using it without other sound mods. That can also be a reason for a CTD for some systems