This is probably because you did not uncheck :
“Slow printing for better cooling” on Filament Settings
And
“Slowdown on bridge” on Speed Settings :
This is all fine to keep those boxes checked, but you are loosing a lot of speed and you may have some differents quality trouble because of speed variation wich is never good on a fast print, you can look this forum thread as an example : [SOLVED] Bad quality when printing PETG - #201 by Thrawn