We have been paying rest of the fee (anything more required than 5000 sats) till today but we just have adjusted this to 0.001 BTC. I know this doesn't sound good but prior to this change, we have paid a lot of fees from our pocket. We will adjust the fee again once on chain fee changes.
5000 sats to 1 mbtc? Holy moly. That's a big change. Blasted ordinals/inscriptions are creating chaos everywhere in the cryptocurrency market these days and are breaking records in a bad way.
It's best to stick with LTC, Doge etc since no one in their right mind would want to transfer BTC unless the amount involved is huge.