I get some serious sound stuttering every now and then in the game, and it's even worse on some of the bigger maps.The music and the voice acting will stutter pretty bad and the game will lag slightly. Wondering if this is an optimization issue that someone can help me fix or if I just need to upgrade (but if my laptop can handle DOS 2 on ultra I'm pretty sure it can handle this game).

I have the exact same problem. Tried reinstalling my sound drivers, as well as changing the bit and hertz sound format in the sound properties in the control panel but no luck. :(

Try enabling vertical synchronization in graphics setting in the game and see if it helps.
The UI of the game cause unusual GPU and CPU stress, generating thousands of frames per second and huge performance drop.
It may be that your system is getting overstressed/overheated. The game is poorly optimized.

I think I know how to fix it.

What I noticed when I went to the sound settings was that the default sound device was popping in and out. I right-clicked the sound-blaster icon and clicked 'sound', checked the output devices tab - one speaker was popping in and out. So, you have to go to Device manager settings -> Sound, video and game controllers, and disable the device that is giving the trouble. In my case it was named High definition audio device, but it can be ATI HDMI Audio.

Hope this helps.

This seems to help for a bit, but the game seems to want different audio tools. Randomly it will pull an audio device in of its own accord.