Delays are based on sport markets not accounts, if you are betting on tennis the delay is highest where as if you are betting on basketball the delay is less , also the delay is based on time of placement in the duration of match
For example you get less delay in basketball when placing bet in quarter 1 where as higher delays in quarter and also shitty low level leagues have higher delays and standard leagues like nba or euro cups have less delay.
To summarise it's based on sports market, not on individual account