Large price difference on Binance Auto-Invest (Convert) orders — is this normal?

Hi from France,

I’ve been using Binance’s recurring plan via the Convert function to automate my investments for a couple of years now. Nevertheless, I lately observed that the executed purchase costs are significantly greater than the precise market worth on the time of the transaction.

For example, one in every of my BTC purchases was executed at present at 14:04 CEST with a price of 1 BTC = 109,140 USDC, whereas the precise market worth at that actual moment was closer to 108,500 USDC — a distinction of about zero.58%.

I perceive that there’s all the time some spread involved, but this appears fairly giant for such a liquid pair.
Is that this regular conduct for Convert-based recurring purchases on Binance?
Would I be higher off using a more traditional strategy by way of spot buying and selling to avoid this type of discrepancy?

Thanks prematurely!