Antarctic Glaciers melt from volcanics s, page-32

This is what i see when looking at the vostok charts.
Every 110KY approx we see temperature peak then drastically drop off.
We also see low resolution smoothed out Co2 readings peak then drastically drop off.

We see Co2 readings lag Temperature by approx 800 years
The last peak recorded was approx 100-120KYO ago.
Something caused the rapid rise on the low resolution charts. Any idea what it was.
Something then caused the rapid decrease into cooler times. Any idea what it was.
Can you or another tell me what happened then on the last cycle peak that is different to this similar peak some 110 KY later.
The Milankovitch cycle is bandied around to often. Their is now alot of scientific talk about cosmic rays and our own constellation playing a part.
Nonetheless if Milankovitch is unequivocally the factor then the only difference between now and then is that low resolution Co2 readings (apples) and High resolution Co2 readings (oranges) are being compared.