I am a complete noob when it comes to mining but thought I would give it a crack as a hobby. With my gaming PC which is fitted with a RTX 2060 Super card. I was getting on avg 35mh/s. so I thought I might as well buy a second card with a riser and see what I get from that. I then removed the 2060S card and fitted a RTX 3060 Ti to my PC - this card on it own produces a hash rate of 50mh/s without any OC and keeping this standard.
So when I eventually connected both, the miner confirms both cards but they both together only produce on avg. 40Mh/s??? doesn't make much sense how the one card alone (rtx 3060 Ti) performs better that both together? Probably left out a lot of technical info that would be required by any assistance will be much appreciated.
If one GPU got 35mh/s and your other one got 50mh/s then your total speed should be 85mh/s with both. Getting 40mh/s is not right. You need to post more info like which program you are using and which operating system.
Are you using a built-in video card for your monitor or is it plugged into the GPUs? If so plug it into the onboard motherboard DVI connector instead and use onboard video. If you are using the display output from the GPU, then it usually slows down whenever you are browsing the web or playing games. Hence your speed will always be slower.