The drop rates in your chests and all the associated multipliers that go with them would stay the same, but being that the staked SPS multiplier is applied to your RP, you'd likely be earning a lot less chests. It's kind of like playing under leveled or starter cards and incurring the penalty for those. Same type of mechanic, alternatively named penalty.

As far as comparing ranked SPS earnings between Silver with a massive stake and Gold or Diamond with a 1x multiplier, I have a reply on here to someone else talking a little about that.

@squishna/re-splinterlands-rxa4lx