This is their explanation
Can I point my mining rig payouts to Jaxx?
No, Jaxx is a lightweight wallet that is not designed to receive mining payouts. We do not recommend pointing any mining rig payouts to Jaxx as it may cause issues on your end as well as potentially causing issues on our end.
One transaction sent from your pool is actually composed of several "micro-transactions" that may cause complications.
If you click on the transaction ID of one of your payouts, you'll see that there's several inputs as well as outputs so it's not a simple send / receive transaction that Jaxx is designed for.
Please redirect your mining payouts as soon as possible and wait for a new update to rectify this issue.
This explanations does not make sense at all.
Jaxx is lightweight wallet and hence you can't send mining payouts. What's the connection? What's the connection from lightweight to you can't send mining payouts?
What's the difference between mining payout and other payouts?
One thing I can figure out is mining payouts are small and frequent. Okay. So jaxx should not be used for frequent payout? What?