odds boost stake limit

odds boost promos always look like easy value but every time i try to put more than a few bucks down, i get hit with a stake limit. it kind of ruins the logic of hunting these offers if you can’t actually get decent volume on them. i get that the sites don’t want to let sharp players go wild, but sometimes the limit is so low that it’s barely worth the hassle. even seen different people mention getting totally different limits on the same promo, so it seems pretty targeted or based on some hidden factors.

anyone else notice this? interested if it’s linked to how you usually bet or just totally random. i’ve tried mixing my stakes up but haven’t seen much difference.