Water and performance

[Jimbuna]

Check your particles density (in game settings) is set to low.

You will take a small fps hit because your graphics card is a little on the low side regarding specs.

Welcome to SubSim

[krashkart]

I'm in the same boat as far as having an integrated graphics chipset, and I know your pain. I tend to keep my periscopes and deck gun sights at maximum zoom when I use them. That and limiting my use of Free Cam or Bridge View are really the only solutions I've found to the problem.

A real solution would be if the chipsets had been designed in the first place to handle the load that we are trying to put on them.

If I'm not mistaken the water is a mesh also, isn't it?

Anyway, try jimbuna's advice and also keeping your zoom levels at maximum on any zoomable optics - including AA guns. It'll help some but you'll probably still have lag whenever your view comes close to including the horizon.

Welcome to Subsim, mate. Hope you have a great time here.

*krash*