Voltage regulation circuit 12V to 5V in 5A range

[richard]

So, do add capacitors

a waste of time until he address' the correct current limiting resistors for each display

if its really 90mA per display then a 1000uF might help a little.
The peak current as it stands could be very high depending on led vf , could be amps , who knows

[Ioannis]

OK, but having a 4.000uF on the 5V rail is too much, isn't it?

Ioannis