Gas price setting

When claiming on builder or buying on the exchange there is the option to change the gas price from medium to slow or fast.

However, changing to slow never works for me.
Is this something other people experiencing?

Isnthis option supposed to work?

Which L1 are you using? Ethereum or Binance? I guess it is the main variable, like your transaction can fail if it does not meet the required threshold at this moment.
It’s a bit (not exactly the same I know!) like if you put a limit order to buy a coin 50% below its current value: it can go through but could take time

if you are using metamask, you can control the gas fees when you are going to approve the tx. however, if you choose too low you risk the tx not going through