There is no way streamers get better wins based on different rtp settings. It's all very easy to explain why streamers get regular high x wins.
Most streamers promote a casino and they both want to gain from that:
Casino: promotion, new sign ups and more profit.
Streamer: affiliate income, deposit bonus and profit!
A quote that would fit the majority of casino streams these days: ''When u have nothing to lose, it's no gambling''
Streamers play either with a deposit bonus, got affiliate income or get cashbacks up to 100%**.
**Yes, this is the new trend (probably an old one aswell). Streamers with absolutely zero risk, gambling infinite funds on 'trusted' casino's.
An example would be 'Xposed'. Infinite 2.500€ reloads with zero risk taking. Like hitting 100k or even 250k is hard that way..
Anyway, he is actually 'clear' about it, though it would be naive to think he keeps 25% of winnings, based on casino gains.
So there def. is casino streamers out there with cashback deals, who are not clear about it. So no risk involved in losing money.
All these 'streamer advantages' lead to bigger wins, based on actual playtime; u can chase a big win, if u don't care about the losses chasing it.
Many have proven this over and over again on doa2 or even jammin' jars. Obv luck is still involved aswell.
I personally lowstake chase aswell, which has given me several 1000-10.000x wins. This can be very costly, even at 20 cent.
The reason streamers get more big wins is all based on the actual money invested. And overall those big wins don't put them directly in profit.
This is a mixture of a casino edge (due to affiliate gains) and affiliate income, based on a set target.
This also explains why a lot of streamers play those ridiculous stakes. If there is no risk involved in them, so why not.
When the affiliate is doing a good job, the stakes will grow with it. This is why all 'popular' streamers end up with 5-100€ spins.
Anyway, I could write a book about this tbh and I am not an expert at all.
Conclusion is: there is so much easier ways to gain big wins as manipulating slots rtp.
And streamers DO have a higher RTP, based on affiliate gains.