UBB.threads PHP Forum Software Community Forums UBB.threads Bug Reports Non Bugs [NOTABUG] Huge Cached Permission Table Overhead

Those aren't unusually large numbers, your total overhead for your tables is 1 megabyte while your tables are 1.7 gigabytes - about 0.006%.

Cached permissions are 3.4 megabytes with 844.0 kilobytes as overhead, larger than average but still not huge.

I optimize every couple weeks right before I make a backup