UpdateInvalidatedFastClusters/UpdateGeometry causing lag spikes in game

Recently, our game Mow The Lawn has been experiencing pretty severe lag spikes. We are trying to pinpoint the issue but we aren’t sure what the cause is.

We tried running a server with pets disabled and noticed that the issue was gone. So we rewrote them. However when running a performance test with the new pet system we noted that the issue was still prevalent which seems to contradict our previous findings.

Here’s a screenshot of the microprofiler:

Along with what is seemingly causing these spikes:

Any insight as to what the cause might be would be appreciated.
Thanks