your 12700 have 8 p cores (16threads) and 4 e cores (4 threads),.
see graphs,. those last 4 graphs are 4 e cores,.

it mean ,. this work carry by E-Cores ,. and your p-cores carry forground works,.
if you click current task ,. that task use p-cores mostly,.
you can manually switch cores with taskmanager (set affinity) or you can use process lasso,.

personally i dont like those methods ,.
so i edited my balanced powerplan ,.heterogeneous policy 4 to heterogeneous policy 0 ,. which forcefully use all cores with hyperthreading,. and this method give best 1% and 0.1% lows in games