Different RRC user accessibility in different eARFCN

Hello Experts,
Any suggestion: RRC user accessibility in 1775 earfcn are high compared to 1350.
RS power and tilt same.
1800 band.
Vendor Huawei.

Check priority…

Priority is same. 5 in both.

Do you have mobility load balancing activated in Idle or Connected Mode?

Yes, Idle too.
Is this causing issue? Idle mlb?
And it is ue based Load balancing.

Yes, I think so, this is the reason.

In RRC release UEs are instructed to go to a specific carrier.
Depending on load balacing settings.