what would be the best solution for decreasing transaction fees to rational level? Rational being that it could be rational to use these transactions in every day payments.
One solution exists already (Segwit 4MB blocks), but it's not fully adopted yet. It will take time for Segwit to have it's full impact on fee reduction...
Do you have any idea why Segwit adoption has stalled in the last ~3000 blocks?
http://segwit.party/charts/#(pick the "since activation" option)
After a steady rise the percentage of Segwit transactions compared to all BTC transactions peaked at roughly 18 % and then
was followed by a really steep decline (down to nearly 9 % of all transactions). Currently, it hovers around 10 % of all
BTC transactions.
Have some big exchanges or payment providers stopped using Segwit addresses? I really have no idea what could have
caused this steep decline. I would have assumed the adoption would continue gradually over time, because obviously people
and service providers are incentivized to make use of Segwit addresses due to cheaper fees.