Thank you. My current view is that splitting bigger transactions like 2 000 000 into many  smaller ones around 100 000 - 250 000 coins each should increase competition between staking wallets and difficulty, which is bit low right now, will go up.
Please consider splitting your transactions into smaller chunks when you have some free time on your hands.

This is not urgent and does not have to be done in one go but every small bit helps

I find this topic of research interesting and will share more information when there is more data.