We've seen a number of transactions dropped on etherscan due to this issue, so we're temporarily increasing the fee our ETH wallet pays relative to the default recommendation from the wallet to increase transaction speed.
Note that the slowdown will also likely affect the arrival time of ETH payments you send us and there's nothing we can do on our side to speed up those transactions, unfortunately.
Hopefully the rates will stabilize soon (or even better drop back to more typical rates again).