I made this thread to share some of my findings while trying to get my copy of the game into a better shape.
I'm posting here in General discussions, as there isn't a forum for the series yet.

1. Get a newer build of the game that supports higher resolutions:

The current version on GOG is a pretty early build (1.0c), newer builds that handle modern high-resolution better were also released on SkyRiver's website, but are currently only available through the Wayback Machine:

https://web.archive.org/web/20250521195956/https://www.skyriver.ru/faq_mech1.phtml
https://web.archive.org/web/20250521195956/https://www.skyriver.ru/download/patch/Mechanoids_patch104.exe
https://web.archive.org/web/20250527082358/http://www.skyriver.ru/download/patch/Mechanoids_patch106.zip

2. Set render distance to "Normal", if you care about terrain decals, tip was taken from:

https://www.pcgamingwiki.com/wiki/A.I.M.:_Artificial_Intelligence_Machine

3. There's a fan mod that tries to address some discrepancies, but also includes separately installable localization fixes too as well as the v1.04 and v.106 patches for the game.

https://www.moddb.com/mods/aim-106-extra-fixes/downloads/aimv106fixes

Having played the game on a modern system, there's an apparent physics de-sync happening in certain areas.
Signs of this happening are your glider's top speed picking up, and uncontrollably accelerating and controls becoming erratic.

Unfortunately, one of these areas is mandatory to progress the game.

I haven't yet found a good work-around, other than trying to push through - and hope the game doesn't crash.

are you talking abt Clan Wars?
for I don't believe I heard abt such bug in A.I.M.1.
as for Clan Wars, I heard it's because of affinity for some. try locking to 0. or use the Stasis if we're talking abt Swamps. some have this bug because of corrupted Rock sector-related file (suddenly, yeah).

I'm talking about A.I.M. 1, an issue I've encountered on a recent play-through.
On certain locations - like underground, or the dried lake-bed of the Desert sector - the player's glider starts to pick up speed even without player input and the controls start to become erratic, turning tiny inputs into wild swings of the craft.

This behavior persists, no matter which executable of the game I'm using (GOG's, 1.04, 1.06, etc).

As time goes on, the gliders speed reaches values where the game-engine starts to become erratic, with collisions sending the glider careening into the air, or you're flung outside the bounds of the game world.

(I wonder if this is because either wrap-around logic, where the velocity values go negative, or due to floating-point arithmetic producing a fluttering results when the input value gets too high).

It's similar to issue 7 listed on the A.I.M. wiki, but affects not just handling but base velocity too, leading to the issues I'm listing:
https://aim-artificial-intelligence-machine.fandom.com/wiki/Troubleshooting