It is a well established fact that proportional is a flawed payout method.
"Strategic miners" mine the most profitable part of a round then hop away somewhere else leaving the dedicated "regular miner" to "finish the block".
Proportional
appears to be the fairest method and is often chosen by new pool operators unaware of how exploitable it is or the "hopper tax" they expect their regular miners to pay.
I really don't mind where people mine, I'm just curious if it is lack of knowledge, lack of care about income or just what
I expect the hopper community will come up with some fud to try to counter my claims - they were very vocal when my pool changed from proportional to a fair payout system.
https://bitcoil.co.il/pool_analysis.pdf Appendix B
Pool-hopping in proportional pools
shows the detailed maths
IMO the whole PDF should be required reading by anyone planning to open a pool
Cheers
Graet