Grin Pro Miner released for Swap and is "Stable". There was an issue with some pools missing stratum updates. Make sure your pool is up to date.

Stratum update for GrinProMiner

https://github.com/swap-dev/cryptonote-swap-pool/commit/07b3736f30b904ff22ab8f317d3c28369d6e03f8

and this one for gminer

https://github.com/swap-dev/cryptonote-swap-pool/commit/359a0451d158b02ddbc305c252be0c57716a2db2


for AMD use GrinProMiner for best results: https://github.com/mozkomor/GrinProMiner/releases/latest

for Nvidia use Gminer for best results: https://github.com/develsoftware/GMinerRelease/releases/latest


happy graphing yall!