Your 1660ti should give you 30-32MH not 27MH, that's the type of hashrate you should get from a normal 1660 non ti and non Super, it's because you aren't using the right configuration or OC combinations. Use Trex miner and lock the core clock to 1300 using Hive OS and meme clock 1600-1900.
I didn't realize that! I was using Nicehash miner. Is there any possibility that Nicehash is stealing some of the powers from the hardware? I will try the Trex miner and the configuration you've shared here if I decide to go back to mining again. As of now, I have completely stopped mining as I use my laptop for other activities like gaming and graphics design. Also I believe, if I start mining full time, it will ruin the hardware over a period of time as laptops are not really that well built to handle a huge amount of heat for a longer period of time. Thanks for the tip though!
If your laptop is a gaming laptop then it's good for mining, the only thing you shouldn't do is mining 24/7 on a laptop, gaming is a huge workload just as mining too but continues mining won't be safe for a laptop so you can get away with few hours mining per day.
Why mine on a laptop 2 hours a day?
A very small profit, and this has not been profitable for a long time, because the shortage of video cards is over.
I am also against mining on laptops, but if it is profitable for you and the warranty service will repair the laptop, then mining is possible ..