I don't have any issues with the variable weather, it's like real life. Most series run free practise in the morning, qualifying around lunchtime. If you're practising to that much that you're optimising setups for a specific weather and complaining when it doesn't match then you're a hotlapper not a racer. 
I'll run a baseline and tweak the tyre pressure, maybe the ARBs if there's a significant change in temperature.

I'll run a baseline and tweak the tyre pressure, maybe the ARBs if there's a significant change in temperature.