Stutters / FPS drops

[Fry McFly]

Oddly enough, I have these problems on a modern system + a modern OS. Especially when I move the camera and even more when there is a battle going on. So, when projectiles are flying around and everything is full of explosion and lighting effects.

My system:
Operating System
Windows 10 Pro 64-bit
CPU
AMD Ryzen 5 3600
RAM
16.0GB Dual Channel
Graphics
LG HDR WFHD (2560x1080@75Hz)
NVIDIA GeForce GTX 1070 8GB VRAM

I got the game running with the following tools and instructions:
https://www.pcgamingwiki.com/wiki/Ground_Control
gc-resolution-changer-2.1
dgVoodoo 2

What I have already tried:
Set different graphics cards and VRAM sizes in the dgVoodoo control panel.

[H.]

Bringing this back from the grave because I have a decent rig [i9 12900K, 3080, 64gb ddr5, overkill] Will post a fix if i find one.

[[cAmA]PhreXes Phowltear]

So, in the GOG forum for the game, the thread "GC1: Any way to improve the framerate?" has the solution to this issue. There, you'll find a GitHub link to a custom ddraw.dll which you just drop into the GC1 folder (the one with the GC.exe). And suddenly, the game runs without any stuttering.