Manually dropping items from platform: inventory moves too fast

Sometimes my platforms have a ton of item throughput due to collecting asteroids, putting them in the hub, removing them from the hub, and throwing them out into space (it's spaghetti but it works).

When this is happening, it is nearly impossible to manually drop items from my space platforms, because the item I am trying to click on is moving up and down in inventory positions too quickly; is there a solution around this, like locking whatever my cursor is hovering over stay locked in place?