So, I bought a bluetooth controller in order to play some mobile games cause I hate using touch controls, but mostly I wanted to play a few turn-based games that didn't get affected by a little input lag. So I got the Ípega 9087 and it works great: when playing on my phone, there's no noticeable delay and the same on pc (my notebook has bluetooth), but when I try to stream my pc to my phone, if I use touch controls it works just fine. Dark Souls 2, Persona 4, Hades and Dead Cells worked perfectly using touch controls, but then again, I hate using the touch screen.
Now here's the problem: when I connect my bluetooth controller (either to the phone or to the PC) the stream gets REALLY bad, as if it was bad internet connection, and sometimes it even crashes the app, but I know it's not my internet because the moment I turn the controller off it goes back to normal. I believe the issue lies with either the controller or some bluetooth thing interfering with the wifi (?)
I searched for any similar issues but I couldn't find any, so I'm asking here.
My phone is a Le eco Le x520, the controller is the Ípega 9087 and I'm using a 2Ghz wifi. My computer does not support 5Ghz.

TL;DR: I think my bluetooth is interfering with the wifi connection and crashing the stream to my phone. Is that possible? If so, how can I fix this?