Perhaps this was already addressed and I'm pulling a TLDR on myself...so forgive me.
When I first start up the game with the mod installed (1.08), and go to the campaign menu, there are two lines of text on the bottom and are overlapped with each other. That's one minor issue.
The next issue is that when I actually started up the campaign, and I'm on the strategic map, I intercept an enemy surface group or sub, and the game immediately freezes and drops frames to <1 sec. And it doesn't stop doing this until I move the cursor to move my boat away from the enemy group. Then the frames jump right back up to normal. Plus, it doesn't engage the mission that would normally occur when you "touch" the enemy group.
For full disclosure's sake, for the campaign, I had chosen an Ohio SSGN to use. Could this be the issue? I suppose I haven't tried using some other boat.
Am I an anomaly? I love this mod and can't wait for more updates.
