Making your return pump slower is one option. And sticking a messy filters in another. You can use that as sentiment filter and change out from time to time.
But watching few other ones you posted, I think only way is to have the water in your return higher. It maybe necessary to forget that baffle slot. It’s too small and seems to causing traps.
Edit: you don’t have enough water in your drain compartment. You should have steady flow. It’s trickling down.
Make sure the return fittings are tight on return pump. Also, if this is a variable return pump, make sure you are set to constant flow. It’s almost as if it’s set to wave mode.