On some games I didn't play max lines for this reason, but then again I never actually hit a max win on a bonus round. Not completely sure how much of a difference it would make. If I got a max win, I think I would be both very happy to get the win but a part of me would also be sad that the slot basically ate part of it and it could have been much more.
Yeah - the worst RTG slot for this is Count Spectacular
: If you played the max 25 lines and filled the whole screen with expanding wilds (which is possible in the free-spins) you would only get paid 1/5
of the total win that you would get if it wasn't capped!
For that reason, IF I ever play it (which I don't very often) I reduce the win-lines to only 5 and bet higher per line. Then you would get the FULL value of your win for a full screen of wilds.
I was doing exactly that when I hit one of my very few wins over 1000x on any game many years ago. I missed getting a screenshot, but this was the log from it, showing my 1,528x win...
The only time I have hit the MAX WIN
on an RTG slot, was when I got 5 scatters during the free-spins on Hairway to Heaven: