What are you calling "drifting?"
Electronic digital scales mostly operate with load cells. There are several different variations of cells. The most common type is "U" shaped and measures the birefrigence between the gap at any given time.
It isn't unusual for any scale, beam balance or electronic to drift or wander a tenth of a grain, just from your personal moving around. I have a Dilon and it's very accurate and repeatable. I also have one of those small, cheap Hornady digital scales.
The Dilon is used on my bench. I'm a bit anal about accuracy and the Dilon fits that bill for me. The Hornady is used for load development at the range.
Depending on what you're shooting, that tenth of a grain won't make a hair of difference to accuracy, function or velocity, unless you're loading very small cartridges with fast powder.
The fact that you're scale is measuring the tiny air movements or maybe vibration, only goes to show how sensitive it really is. Sounds like a good scale.
When I was still working in the manufacturing of glass, we used extremely sensitive beam balances, that were sealed in special cabinets, away from drafts, vibration dampened and thermally protected. We used specific weight, non detergent mineral oil to dampen swing and vibration effect as well.
When we switched over to load cells, we tossed some extremely expensive mechanical scales. The new load cells also proved to be temperature sensitive, but that was taken care of with a computer. They were only minimally effected by vibration. Air movement didn't bother them.
In very small scales, all of the above issues are even more critical. Really want to drive yourself insane by counting the split hairs on a gnats butt??? Take a few loads of powder around 20 degrees C and set them aside, so that you can measure them later at 5C and 30C. There will be a measurable difference.
My indoor scale has a cabinet between it and the door, to keep drafts down to a minimum. I use a RCBS 505 to reference calibration if I'm concerned.
As for your question, you're looking for some sort of dampening to stop the tiny swings. It can be achieved but at what cost and for what realistic reason.
Just remember, the components you're using, whether you personally measure them or buy and assemble them, aren't precise either and vary from one piece to the next, even in the same lot. The only thing you have some control over is the weight of the powder, you measure. The speed of the powder will vary from lot to lot.
If you're trying to get the scale to settle down faster??? Just remember, whatever dampening you use, it creates resistance and that will create more variables.
