This is my understanding of the issues with the Ba.88. This is taken from Wikipedia in particular, but I can quote similar information from 3 sources (Wiki is on-lien making cut and paste easy).
I too, started with an image of the Ba.88 and said "Wow! that must move well!". However:
The
Breda Ba.88 Lince ("Lynx") was a
ground-attack aircraft used by the
Italian Regia Aeronautica during
World War II. Its streamlined design and retractable
undercarriage were advanced for the time, and after its debut in 1937 the aircraft established several world speed records. However, when military equipment was installed on production examples, problems of instability developed and the aeroplane's general performance deteriorated.
Despite its promising beginning, the addition of military equipment in the production series aircraft resulted in high
wing loading and detrimental aerodynamic effects with a corresponding loss of performance, below any reasonable level.
Two
Gruppi (Groups) were equipped with the Breda Ba.88 on June 1940, operating initially from
Sardinia against the main airfield of
Corsica, with 12 aircraft on 16 June 1940 and three on 19 June 1940. The crews soon found that the Bredas were extremely underpowered and lacked agility, but the lack of fighter opposition resulted in them being able to perform their missions without losses.
Later, 64 aircraft became operational serving 7º
Gruppo in the North African Theatre with 19º
Gruppo stationed in Sardinia, but their performance remained extremely poor resulting in 7º
Gruppo being grounded from the end of June until September, when the Italian offensive against British forces started. Of three aircraft used, one was not even capable of taking off, and another could not turn and was forced to fly straight from their base at
Castelvetrano to
Sidi Rezegh.
With anti-sand filters fitted, a maximum level speed of 250 km/h (155 mph) was reported in some cases and several units were even unable to take off at all. These machines were fitted with "Spezzoniera" Nardi dispensers with 119 2 kg (4 lb) bomblets, 1,000 rounds for the three 12.7 mm (0.5 in) machine guns and 500 rounds for the 7.7 mm (0.303 in) Bredas. Although the weapons were not loaded to full capacity and the aircraft was lightened by eliminating the rear machine gun, observer, bombs and some fuel, lessening the weight did not substantially affect the aircraft's performance.
Oddly enough, the performance specs from Wikipedia appear more to be for the prototype machines, not as equipped for war, althought it lists the planned bombload and weapons..
Uncle Ted