Aiming progress changes:
The aiming mechanics got fixes and adjustments in their logic, so that they work overall better and more realistic. You will notice that when you hit a target then subsequent hits will happen more consistently unless the target maneuvers. Maneuvers will also affect the overall aiming progress more against a target, making fast ships have more chances on avoiding incoming shells (The UI is set to update slower for performance reasons, so the accuracy changes when you hover on target will be displayed not fully synced).
Suggestion to change Fast to Agile, as I am sure that is the intent since you mention maneuvers. A ship's speed has no bearing on firing solution accuracy as long as it is known.