If you are in need of large chunks of tBTC you should try to contact either
bitaps or
studio_mining. They have lots of tBTC for testing purposes and do give out to users who requests them. Why are you in need of 10 tBTC? You could better try out using regtest mode in Core and can probably mine those 10 BTC easily without spending much time on faucets.
Return back those tBTC once you have tested, to the faucets since it could be useful for someone like you in future.
aplistir once had 1 tBTC but someone never returned back. Try to contact and if they do have some btc would probably help you.
I am still not sure why people never return tBTC back to the owner at most of the times