Yes, I do realise that.
I'm sorry to bother you with it, but you probably know, that Juniper won't fix their broken SNMP stack because of customer who's bought 4 low level switches.
You are producing amazing software, that I love and prefer over other alternatives and you'd helped me before in similar situation - update to Junos 17 on EX4500. I thought this time it would be similar resolution. In meantime I fixed the problem by limiting the tree using custom view, but (with all respect) I thought there might be a cooler solution - for example not going through the whole snmp tree every poll, or something like that.
OK then, so you can close this issue.
Thanks for your effort.