From 2002 discussions on trim with Oleg I got some answers.
Question was why holding the stick steady off center doesn't get the same speed/acceleration as stick centered by trim. After all, trim will move a hands-off stick or column.
Answer worked out to that we think the stick is held steady but it is not. This is mainly due to hardware, short gaming sticks and small involuntary muscle tremors.
This is partly borne out by the reported results from those who made and use full size sticks to play IL-2.
And since 2002 the impact of needing to be trimmed has been less.
For my part, and you can easily check this yourself, there are two things that help.
1) use a light touch on your joystick. Try flying holding the stick with just 2 fingers and thumb just for while.
When you catch yourself resting your arm weight on the stick or elbow on the table, get your arm up so it's not weighing the stick down. If you find yourself clenching the stick, loosen up. Besides the weight and ham-handing those are great ways to transmit tiny muscle tremors to the stick.
2) go into stick sensitivity and add FILTER to the pitch/elevator axis. Try about 50% at first. Maybe you need more or less but you should see results in minutes of testing. FILTER will flatten out the small and fast shakes even at less than 50% while yes, slowing your jerk-speed by a fraction of a second that you can see by watching the red and green blocks in the stick test area of the same stick sensitivity screen.
It's not perfect but you should gain something if you're not already light-handed and using FILTER.
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