Hello, Well I do not know Sober's megamod really. Just downloaded SH5 last week and installed the TWOS mod and some small other addons.
But about video quality....
Well....
These Graphics do cut it for me
And that with a 2.33 Ghz dual core, Nvidia 920 and 5 GB RAM ?
Quite good if I say so myself
And if I remember correctly TWOS has no effect on mission to mission. Though of course you will get boat upgrades which real U boat commanders also got.
Ashikaga