Don't miss Claymore, just use my MoreEpochs Mod of Claymore Eth Miner v15.0. I've updated Claymore miner to support up to 500 DAG epoch, fixed bugs, added several features, reduced devfee to 0.6% and updated strap driver to work with AMD drivers 20.5.1-20.12.1, so if you have 8GB Polaris GPUs you can achieve very high hashrate by using -strap and -rxboost options. You can get it from my topic, check my signature.
According to Claymore's Readme!!!.txt, -rxboost can be used only with Polaris (and some old cards like Hawai,..) GPUs. You can still try to use -strap option. Link to my topic is in my signature under my posts.