I have Transparent with SSL, cache is on but Ive tried turning it off. It will work with pc and not phone, then pc will stop working, ill re enable it and post a log when it happens again. My way around it is to use hosts without proxy. Proxy will not work at all with smart home devices or speakers, so my smart hub, google home, my android tv boxes, anything that pulls dhcp just doesnt work. So I set all devices that arent computers under hosts without proxy.