Looking at typical drones used in Ukraine, we have speeds/sizes ranging from 50 km/h (or less) for small FPV drones through to 110 km/h ZALA Lancet or 185 km/h for a HESA Shahed 136.
If you look at the likes of the Embraer EMB 314 Super Tucano, you are dealing with a speed range of Cruise speed: 148 km/h (Stall) through to 520 km/h (cruise). An AT-802U has 169 km/h (stall) through to 330 km/h (cruise). Thus , if anything it is the lower range that comes into play in most cases. As mentioned above though, the real challenge lies with target acquisition for something so small.