I've been saying it for YEARS - an OSC on a small(ish) refractor in suburbia works JUST fine, without the need for filters of any kind - just remove the LP gradients etc in PI (VERY easy).
I found LP filters WAY more detrimental than useful, and I have LP probably surpassing suburban Sydney levels (stick your rig next to YSSY 19R and we'll be similar
)
I never could get a single QHY camera - irrespective of type - to be recognised consistently on any of my systems, so I gave up. SX on the other hand just plug and play all day, same as SBIG.