With some extra computing power on my desktop, should I just continue with my P2E or try reduce playing time and give room for GamerHash or just do both?
If you could do both then why not? That would be more profit for you. However you also need to consider the time and resources you are going to have to invest in each one. If you feel like you could do both without encountering much losses then you should do both however if you are unsure about the performance of one then just choose one.
Which one earns more?
I think you also need to consider sustainability. Which one would be better for the long-term? GamerHash is likely to be change over time as technology evolves. It’s up to you where you see each project going forward.
Reading more about this..they've got a burn mechanism and GHX is the first regulated token in European union. They've got good backings too. I'll say their token is at a discount and I'll keep an eye on it imo