Thanks in advance!
In mining there is no long term or short term and all. If you run your mining rig you will be able to make the money or if you simply shut the mining process stopped you will not be able to make the money that it. There is no big information has been shared to say how it handle it and all.
If you want to make money you should go with ASIC miners which is giving high amount hash power to perform the mining operation and it will mine the more blocks. You start mining with the GPU as well but the profit level will be lesser than you can expect on ASIC miners.