Risk of severe impacts increase with every additional increment of global warming during overshoot . In high-carbon ecosystems " such impacts are already observed and are projected to increase with every additional increment of global warming, such as increased wildfires, mass mortality of trees, drying of peatlands, and thawing of permafrost, weakening natural land carbon sinks and increasing releases of greenhouse gases . The resulting contribution to a potential amplification of global warming indicates that a return to a given global warming level or below would be more challenging . 
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report