Springsharp 3.0b2 Beta can't deal with the Italian Capitani Romani class

I was disappointed that the Italian Captani Romani class doesn't work in Springsharp 3.0b2. I would have to alter the design a great deal to have acceptable performance. I believe that the issue is machinery that is too heavy for the power. By radically reducing the speed and displacement, I was able to have adequate strength and seakeeping, but the speed is a ridiculous 32 knots. If someone has a magic formula to make the design work, I would be interested. I already increased the draft to help. This is a good data and picture page. This is the Springsharp report:

It/CL/1939 Capitani Romani, Enter country Enter ship type laid down 1939 (Engine 1950)

Displacement:
 3,001 t light; 3,142 t standard; 3,830 t normal; 4,381 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
 (460.88 ft / 455.18 ft) x 47.24 ft x (16.40 / 17.88 ft)
 (140.48 m / 138.74 m) x 14.40 m  x (5.00 / 5.45 m)

Armament:
      8 - 5.31" / 135 mm 45.0 cal guns - 75.71lbs / 34.34kg shells, 150 per gun
   Dual purpose guns in turret on barbette mounts, 1938 Model
   4 x Single mounts on centreline ends, evenly spread
      8 - 1.46" / 37.0 mm 54.0 cal guns - 1.66lbs / 0.75kg shells, 150 per gun
   Anti-air guns in deck mounts, 1939 Model
   8 x Single mounts on sides, evenly spread
  8 raised mounts
      8 - 0.79" / 20.0 mm 65.0 cal guns - 0.27lbs / 0.12kg shells, 150 per gun
   Anti-air guns in deck mounts, 1939 Model
   4 x Twin mounts on sides, evenly spread
  4 raised mounts
      Weight of broadside 621 lbs / 282 kg
      8 - 21.0" / 533 mm, 22.97 ft / 7.00 m torpedoes - 1.552 t each, 12.418 t total
 In 2 sets of deck mounted side rotating tubes

Armour:
   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 0.71" / 18 mm 0.71" / 18 mm  0.71" / 18 mm

   - Conning towers: Forward 0.55" / 14 mm,  Aft 0.00" / 0 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 2 shafts, 49,208 shp / 36,709 Kw = 32.00 kts
 Range 4,000nm at 23.00 kts
 Bunker at max displacement = 1,239 tons

Complement:
 243 - 316

Cost:
 £1.913 million / $7.652 million

Distribution of weights at normal displacement:
 Armament: 204 tons, 5.3 %
    - Guns: 191 tons, 5.0 %
    - Torpedoes: 12 tons, 0.3 %
 Armour: 46 tons, 1.2 %
    - Armament: 43 tons, 1.1 %
    - Conning Tower: 3 tons, 0.1 %
 Machinery: 1,177 tons, 30.7 %
 Hull, fittings & equipment: 1,574 tons, 41.1 %
 Fuel, ammunition & stores: 829 tons, 21.7 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   4,062 lbs / 1,842 Kg = 54.1 x 5.3 " / 135 mm shells or 0.9 torpedoes
 Stability (Unstable if below 1.00): 1.31
 Metacentric height 2.6 ft / 0.8 m
 Roll period: 12.2 seconds
 Steadiness - As gun platform (Average = 50 %): 51 %
   - Recoil effect (Restricted arc if above 1.00): 0.26
 Seaboat quality  (Average = 1.00): 1.02

Hull form characteristics:
 Hull has a flush deck,
   a normal bow and a round stern
 Block coefficient (normal/deep): 0.380 / 0.399
 Length to Beam Ratio: 9.63 : 1
 'Natural speed' for length: 21.34 kts
 Power going to wave formation at top speed: 58 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 6.00 degrees
 Stern overhang: 3.28 ft / 1.00 m
 Freeboard (% = length of deck as a percentage of waterline length):
    Fore end,  Aft end
    - Forecastle: 25.00 %,  22.97 ft / 7.00 m,  16.73 ft / 5.10 m
    - Forward deck: 30.00 %,  16.73 ft / 5.10 m,  13.78 ft / 4.20 m
    - Aft deck: 30.00 %,  13.78 ft / 4.20 m,  13.78 ft / 4.20 m
    - Quarter deck: 15.00 %,  13.78 ft / 4.20 m,  13.78 ft / 4.20 m
    - Average freeboard:  15.58 ft / 4.75 m
 Ship tends to be wet forward

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 114.1 %
  - Above water (accommodation/working, high = better): 142.2 %
 Waterplane Area: 13,062 Square feet or 1,213 Square metres
 Displacement factor (Displacement / loading): 129 %
 Structure weight / hull surface area: 79 lbs/sq ft or 385 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.94
  - Longitudinal: 1.74
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent