I had some cards laying around since the 2016 mining frenzy, and decided to recently build back my rigs on SMOS.
I noticed though that all my 4GB cards are hashing at 8mh/s while my 8GB cards are hashing at their normal ~30MH/s speed

Is there any way to increase the mining speed for those 4gb cards? They are pretty useless at those speeds, especially their power draw is the same as when they were hashing at ~28
Would appreciate any help in getting those 4GB cards to hash some profits with better hashrate.
Running Phoenix Miner v5.5 (Tried previous Phoenix versions as well)
4gb gpu can miner other coin on less network before asic & fpga take over, so basically you need daily update which coin is more profitable, thats make 4gb unfavorable on most of miners, if you good times so be it you can switch algo anytimes