yes, i believe if proof of stake on ethereum will make the price of eth growing in fast mode,
and personally i have no doubt on ethereum, because this coin is the best altcoins now,
and now when the price of eth down, i just started to collect more ethereum

Sure, it will have such effects when Ethereum becomes stakeable coin. Unfortunately, the switch from Proof of work to Proof of Stake on Ethereum network has been delayed so many times, and it seems that Ethereum investors lost their patience and started to dump ETH hours ago.