No worries guys,
tell you what, I should test the game on my brothers PC. I'll do this some day soon and get back to you. He has a slightly newer PC with an Intel structure.
Admittedly my graphics card is old af, and my CPU is very dated as well. The latest call of duty game will not even launch on my PC because this specific CPU has lost all supoprt by their engine. - just an example of gaming troubles I face these days. ..Built my pc at least 8 years ago.
I am guessing now that Nightmare is one of those games that LOOKS "retro" but is actually completely modern in the way it runs, therefore not actually being so "low bit" and lightweight as one might hope.
Also to revise my earlier review, when I said 25ms mouse lag, I really meant 250ms, as I was imagining about a quarter of a second. 25ms would be tolerable but my lag was not. It could even be slower than 250ms, I really can't measure it.
Anyway, congrats on having such an awesome game out. I'll be watching for updates over time. Cheers!