So have had this issue since 1.7.17 - light effects are very slow, even when set to the fastest speed, noticed the change at .17 and has persisted since. Other computer runs just fine effects are much faster set at the fasted speed.
My main is a Asus Maximus X Apex - 16 GB Gskill RGB Memory, Core i7K, Strix GTX1080 RGB, Asus Terminal for Addressable header.
My 2nd is a Asus Strix X299-E Gaming, 16 GB Gskill RGB Memory, Core i7K, Strix GTX 1060 RGB
Just upgraded both to 1.17.35 still the effects are very slow on the Apex, just fine on the X299 Also when going to the Music Mode and selecting Party my X299 with 90 LED addressable strip plugged into the onboard header, gives a sound level effect, multi color jumps up and down with the music, while all the rest of the LEDs have a red flashing effect. the Maximux with one 60 LED addressable strip plugged into the Aura Terminal port 1, and a 30 LED strip plugged into Terminal port 3 just give the flashing red light effect like the rest of the LED's. I would love to get the same effect, as it would look pretty cool with how I have my addressable strips attached to the wall.
Also like someone stated above, I am not able to save the number of LEDs in the Aura software, I change them, hit save, and it goes back to the setting of 90 for each header.
Thank you