Its looking like a bug unless there is something else not mentioned here.
So Dreadmare should be in your stat box and if you click it you will get the Azia buff which is +250 and perm buff so you can click off the mount itself and the stats stay
Your maximum mount run speed is based on the fastest mount you have ridden
, not what's in your stat box or just on the keyring or inventory. When you get a new mount, summon it and ride it around a flat zone for about 30 seconds. Then stick it in the keyring and use it when you want that mount look.
What is your character velocity when running without a mount? That could be affecting it just like the bard's songs would also affect your mount speed or certain detrimental buffs or weight
Moving forward - a 75 velocity mount can be gotten fairly easy a couple ways and once you have that it makes all this null.
1. Go get a Gold Ticket from the loyalty vendor in PoK or from a player vendor in the bazaar. These are lore so you have to do them one at a time.
2. Go to King's Court Casino (in Shadow Haven)
3. Turn in ticket to Jacob Thornblade.
4. You can win one of 8 items; the Glowing Black Drum
is the one you want.
5. Keep handing in Gold Tickets until you get it, hang on to any of the list below. All are lore so once you get one of them the next ticket will get you something different. Just keep handing in tickets til you get the mount.
If you get a message that the wheel is not spinning/jammed. That is because it landed on one of the items you already have in your bags
You can increase your chances of winning the GBD on the first try, if someone (in your guild or on your server) will lend you the following:
1. Fungus Covered Great Staff
2. Holgresh Elder Beads
3. Rubicite Breastplate
4. Scimitar of the Mistwalker
5. Ton Po's Bo Stick of Understanding
6. Vibrating Gauntlets of Infuse
If you have all 6 of those items in your bags, then the only 2 items left that you can win are either the aforementioned mount, or Guise of the Deceiver, which is a Dark Elf clicky.
Many players have the "casino mount kit" and will loan it out sometimes.
The other easy one is the Seru mount.
And coming up on Anniversary is
Whirligig Flyer Control Device
is 12th anniversary and fairly easy - someone on each server has to start the thing and then its open for anyone 24/7. High level folks will come and leave lots of the stuff just laying there for others to get.