Having spent some times with this mod while testing my own sinking mod, I have found some workarounds which pretty much eliminate the freezing issue for me:
-1. turn down the "particles density" slider in the Graphics settings. ATI cards seem to have an issue with particles the way it is rendered in game;
-2. use the anti-lag tweaker:
http://www.subsim.com/radioroom/down...o=file&id=2871
[config]
RenderAheadLimit=2
FPSlimit=38
I use the settings recommended by Sober (see above) and it basically eliminated the freezing on big explosions and made all gameplay a lot smoother in general. YMMV.