I love your sarcasm
(that’s sarcasm too)
if PCH is congested, then ONE of the solution is to reduce the LAC size.
1/ not all paging deletion are linked to PCH congestion
2/ IF the PCH is congested, then there are others way to solve the problem.
in your case : LAC are already small, and PCH may not be congested.
So in your case, you are still in step 1 : what is the cause of the deletion ? t3113 expiry ? wrong LAC address ? wrong MSC parameters ? SDCCH drops ? Abis congestion ? PCH congestion ?