I have been playing with the lease filter:
what I found out that there are some fleets that load quickly, and some that load slow. This is for enterprises with many planes. For enterprises with few planes, all load quickly. I have one with 127 planes that doesn't have any delay whatsoever and one with 177 planes that already experiences delays.
The fleet types that load quickly do load quickly across all enterprises. The ones that load slowly do load slowly across all enterprises.
Whether they load quickly or slowly is not a matter of fleet size. I have fleets with 2 aircraft loading slowly and fleets with 200+ aircraft loading quickly.
When you are switching from:
a ) fast to slow: substantial delay.
b ) fast to fast: no delay
c ) slow to fast: slight delay about 1 sec
d ) slow to slow: very substantial delay
Maybe other players (with 177+ planes) can corroborate these findings and add theirs.
Fast:
E190
E195
E195 LR
E195 AR
A319-100 Light
A320-200 Light (enhanced)
A320-200 Medium
B737-700 BGW
B737-900 ER BGW
B737-900 ER HGW
B737-900 ER HGW (winglets)
Q400A
787-8
A321-200 standard (enhanced)
CRJ 700
CRJ 900
SSJ 100-95
Slow:
E170
E190 LR
E190 AR
B737-900 ER BGW (winglets)
Q300A
Q300B LR
737-300 HGW
737-500 BGW
737-600 BGW
737-800 HGW
A319-100 Light (enhanced)
A319-100 Medium (enhanced)
A319-100 Heavy
A319-100 Heavy (enhanced)
A319-100 High Density (enhanced)
A320-200 Medium (enhanced)
A320-200 Heavy
A320-200 Heavy (enhanced)
CRJ 900 LR
CRJ 1000 ER
Avro RJ 70
Avro RJ 85
Avro RJ 100
Strange:
(in two enterprise loads quickly, in one loads slowly)
B737-800 BGW
(in one enterprise loads quickly, in one loads slowly)
B737-300 BGW
B737-400 HGW