Explanation
Today I wanna mention about an error that usually happens in special truck delivery missions or special destroyer missions. That error is missions either fails instant or it's impossible to reach speed requirements.
This is happening because game is running too fast in a point that some mechanics of the game updates itself more than other parts. This is usually happens in special truck delivery missions by not meeting speed requirement or in special destroyer missions, special destroyer goes too fast that it's impossible to escape or catch it. This usually happens at +200fps. And today's computers can go even +500fps, which is 60fps was standard when this game made.
Solution
One of the possible solution is limiting fps. If you have Nvidia GPU, you can limit it without any external program. Currently, this is only accepted solution. If you are planning to use another software that limits fps, ask moderators first.
How To Fix
Close the game.
Open Nvidia Control Panel and go to 3D Settings Management.
Scroll a bit, you should see Maximum Frame Rate setting. It's off by default. Open it and limit it to 60fps (recommended by mods due to consistency, not forced rule). Click Apply.
You don't need to restart the computer.