I've one question.I'm mining Monacoin and Vertcoin. My estimated rewards per 24h for 1 gpu are:
0.320528 Monacoin
0.591047 Vertcoin

I'm mining them using excavator + MultiPoolMiner and in last 24h I received:
0.10844352 Monacoin
0.22288436 Vertcoin

My earnings are almost 2x lower than expected. On previous days I got different proportions (MultiPoolMiner was chaning what to mine) but still the score was similar. Almost 2x lower.

I know about difficulty. I checked it multiple times. For Monacoin it's almsot constant and equals 65-75k in the last days.
Let's expect 80k. On Whattomine it's still a higher earnings than current. What's going wrong?